[Bug]: App closed suddenly when adding transparency to a layer

[mike40033]

What happened?

I had several screenshots open as layers. I made all layers hidden except one. I selected parts of the image using select->By Color, shift clicking in multiple places. Then I attempted to add an alpha channel to that layer, and the app closed suddenly, and the GIMP Crash Debug dialog opened up.

What should have happened?

The App should have allowed me to add an alpha channel to the layer, so that I could clear the selected portions.

Output of snap info $snap_name

$ snap info gimp
name:      gimp
summary:   GNU Image Manipulation Program
publisher: Snapcrafters✪
store-url: https://snapcraft.io/gimp
contact:   https://github.com/snapcrafters/gimp/issues
license:   unset
description: |
  Whether you are a graphic designer, photographer, illustrator, or scientist, GIMP provides you
  with sophisticated tools to get your job done. You can further enhance your productivity with GIMP
  thanks to many customization options and 3rd party plugins.
  
  This snap is maintained by the Snapcrafters community, and is not necessarily endorsed or
  officially maintained by the upstream developers.
  
  Upstream Project: https://www.gimp.org/
  snapcraft.yaml Build Definition:
  https://github.com/snapcrafters/gimp/blob/master/snap/snapcraft.yaml
commands:
  - gimp
snap-id:      KDHYbyuzZukmLhiogKiUksByRhXD2gYV
tracking:     latest/stable
refresh-date: 2023-01-20
channels:
  latest/stable:     2.10.30 2022-08-19 (393) 546MB -
  latest/candidate:  ↑                              
  latest/beta:       ↑                              
  latest/edge:       2.10.32 2022-08-23 (399) 547MB -
  preview/stable:    –                              
  preview/candidate: –                              
  preview/beta:      –                              
  preview/edge:      2.99.10 2022-08-17 (397) 650MB -
installed:           2.10.30            (393) 546MB -

Output of snap connections $snap_name

$ snap connections gimp
Interface                 Plug                  Slot                              Notes
browser-support           gimp:browser-support  :browser-support                  -
content[gnome-3-38-2004]  gimp:gnome-3-38-2004  gnome-3-38-2004:gnome-3-38-2004   -
content[gtk-2-engines]    gimp:gtk-2-engines    gtk2-common-themes:gtk-2-engines  -
content[gtk-3-themes]     gimp:gtk-3-themes     gtk-common-themes:gtk-3-themes    -
content[icon-themes]      gimp:icon-themes      gtk-common-themes:icon-themes     -
content[sound-themes]     gimp:sound-themes     gtk-common-themes:sound-themes    -
cups-control              gimp:cups-control     -                                 -
dbus                      -                     gimp:dbus-gimp                    -
desktop                   gimp:desktop          :desktop                          -
desktop-legacy            gimp:desktop-legacy   :desktop-legacy                   -
gsettings                 gimp:gsettings        :gsettings                        -
home                      gimp:home             :home                             -
network                   gimp:network          :network                          -
opengl                    gimp:opengl           :opengl                           -
removable-media           gimp:removable-media  :removable-media                  manual
unity7                    gimp:unity7           :unity7                           -
wayland                   gimp:wayland          :wayland                          -
x11                       gimp:x11              :x11                              -

Output of snap version

$ snap version
snap    2.60.2
snapd   2.60.2
series  16
ubuntu  22.04
kernel  6.2.0-26-generic

Relevant log output

<!-- Copy-paste this whole debug data to report to developers -->



GNU Image Manipulation Program version 2.10.30
git-describe: GIMP_2_10_30
Build: org.gimp.GIMP.snapcraft.stable rev 0 for linux
# C compiler #
	Using built-in specs.
	COLLECT_GCC=gcc
	COLLECT_LTO_WRAPPER=/build/gimp/stage/usr/bin/../lib/gcc/x86_64-linux-gnu/9/lto-wrapper
	OFFLOAD_TARGET_NAMES=nvptx-none:hsa
	OFFLOAD_TARGET_DEFAULT=1
	Target: x86_64-linux-gnu
	Configured with: ../src/configure -v --with-pkgversion='Ubuntu 9.4.0-1ubuntu1~20.04.1' --with-bugurl=file:///usr/share/doc/gcc-9/README.Bugs --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++,gm2 --prefix=/usr --with-gcc-major-version-only --program-suffix=-9 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-vtable-verify --enable-plugin --enable-default-pie --with-system-zlib --with-target-system-zlib=auto --enable-objc-gc=auto --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none=/build/gcc-9-Av3uEd/gcc-9-9.4.0/debian/tmp-nvptx/usr,hsa --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
	Thread model: posix
	gcc version 9.4.0 (Ubuntu 9.4.0-1ubuntu1~20.04.1) 

# Libraries #
using babl version 0.1.92 (compiled against version 0.1.92)
using GEGL version 0.4.36 (compiled against version 0.4.36)
using GLib version 2.64.6 (compiled against version 2.64.6)
using GdkPixbuf version 2.40.1 (compiled against version 2.40.0)
using GTK+ version 2.24.32 (compiled against version 2.24.32)
using Pango version 1.48.0 (compiled against version 1.44.7)
using Fontconfig version 2.13.1 (compiled against version 2.13.1)
using Cairo version 1.17.4 (compiled against version 1.16.0)

fatal error: Aborted

Stack trace:

/snap/gimp/393/usr/lib/libgimpbase-2.0.so.0(gimp_stack_trace_print+0x3e8)[0x7faf8b3c7e38]
/snap/gimp/393/usr/bin/gimp(+0x7268ee)[0x55ee782cc8ee]
/snap/gimp/393/usr/bin/gimp(+0x7269ce)[0x55ee782cc9ce]
/snap/gimp/393/usr/bin/gimp(+0x7269ed)[0x55ee782cc9ed]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x14420)[0x7faf8bbf6420]
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0xcb)[0x7faf8ba3300b]
/lib/x86_64-linux-gnu/libc.so.6(abort+0x12b)[0x7faf8ba12859]
/lib/x86_64-linux-gnu/libc.so.6(+0x22729)[0x7faf8ba12729]
/lib/x86_64-linux-gnu/libc.so.6(+0x33fd6)[0x7faf8ba23fd6]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libX11.so.6(+0x3e643)[0x7faf8a5d5643]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libX11.so.6(+0x3e6ed)[0x7faf8a5d56ed]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libX11.so.6(_XEventsQueued+0x5a)[0x7faf8a5d59ea]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libX11.so.6(_XGetRequest+0x5d)[0x7faf8a5d89dd]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libX11.so.6(_XSetClipRectangles+0x44)[0x7faf8a5cf324]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libX11.so.6(XSetClipRectangles+0x52)[0x7faf8a5cf4f2]
/snap/gimp/393/usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0(+0x617f1)[0x7faf8b4977f1]
/snap/gimp/393/usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0(+0x5a846)[0x7faf8b490846]
/snap/gimp/393/usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0(gdk_draw_rectangle+0xf6)[0x7faf8b45b576]
/snap/gimp/393/usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0(+0x3ffb8)[0x7faf8b475fb8]
/snap/gimp/393/usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0(gdk_draw_rectangle+0xf6)[0x7faf8b45b576]
/snap/gimp/393/usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0(+0x1c1e6f)[0x7faf8b6b2e6f]
/snap/gimp/393/usr/lib/gtk-2.0/2.10.0/engines/libpixmap.so(+0x39b4)[0x7faf702af9b4]
/snap/gimp/393/usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0(+0xd7073)[0x7faf8b5c8073]
/snap/gimp/393/usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0(+0x13db9b)[0x7faf8b62eb9b]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_closure_invoke+0x1b2)[0x7faf8a9cb8b2]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(+0x26dda)[0x7faf8a9dedda]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_signal_emit_valist+0x98d)[0x7faf8a9ec4fd]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_signal_emit+0x93)[0x7faf8a9ed143]
/snap/gimp/393/usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0(+0x25922d)[0x7faf8b74a22d]
/snap/gimp/393/usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0(gtk_main_do_event+0x5c0)[0x7faf8b62d390]
/snap/gimp/393/usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0(+0x45c4f)[0x7faf8b47bc4f]
/snap/gimp/393/usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0(+0x45bf3)[0x7faf8b47bbf3]
/snap/gimp/393/usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0(+0x4264d)[0x7faf8b47864d]
/snap/gimp/393/usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0(gdk_window_process_updates+0x13d)[0x7faf8b47912d]
/snap/gimp/393/usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0(+0x23b149)[0x7faf8b72c149]
/snap/gimp/393/usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0(+0x23b354)[0x7faf8b72c354]
/snap/gimp/393/usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0(gtk_tree_view_set_cursor_on_cell+0x1d5)[0x7faf8b72feb5]
/snap/gimp/393/usr/bin/gimp(+0x50859f)[0x55ee780ae59f]
/snap/gimp/393/usr/bin/gimp(+0x4a0407)[0x55ee78046407]
/snap/gimp/393/usr/bin/gimp(+0x497e67)[0x55ee7803de67]
/snap/gimp/393/usr/bin/gimp(gimp_marshal_BOOLEAN__OBJECT_POINTER+0x70)[0x55ee77ebd5a0]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_closure_invoke+0x1b2)[0x7faf8a9cb8b2]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(+0x26dda)[0x7faf8a9dedda]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_signal_emit_valist+0x98d)[0x7faf8a9ec4fd]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_signal_emit+0x93)[0x7faf8a9ed143]
/snap/gimp/393/usr/bin/gimp(gimp_container_view_select_item+0x14d)[0x55ee780aabed]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_closure_invoke+0x1b2)[0x7faf8a9cb8b2]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(+0x277d3)[0x7faf8a9df7d3]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_signal_emit_valist+0x125b)[0x7faf8a9ecdcb]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_signal_emit+0x93)[0x7faf8a9ed143]
/snap/gimp/393/usr/bin/gimp(+0x2b4d43)[0x55ee77e5ad43]
/snap/gimp/393/usr/bin/gimp(+0x2263bc)[0x55ee77dcc3bc]
/snap/gimp/393/usr/bin/gimp(gimp_drawable_set_buffer_full+0x284)[0x55ee77e59d64]
/snap/gimp/393/usr/bin/gimp(gimp_layer_add_alpha+0x1bb)[0x55ee77dc6afb]
/snap/gimp/393/usr/bin/gimp(layers_alpha_add_cmd_callback+0x70)[0x55ee7828cb30]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_closure_invoke+0x1b2)[0x7faf8a9cb8b2]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(+0x277d3)[0x7faf8a9df7d3]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_signal_emit_valist+0x125b)[0x7faf8a9ecdcb]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_signal_emit+0x93)[0x7faf8a9ed143]
/snap/gimp/393/usr/bin/gimp(+0x535bf0)[0x55ee780dbbf0]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_closure_invoke+0x1b2)[0x7faf8a9cb8b2]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(+0x278c9)[0x7faf8a9df8c9]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_signal_emit_valist+0x125b)[0x7faf8a9ecdcb]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_signal_emit+0x93)[0x7faf8a9ed143]
/snap/gimp/393/usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0(+0x7bdc5)[0x7faf8b56cdc5]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_closure_invoke+0x1b2)[0x7faf8a9cb8b2]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(+0x278c9)[0x7faf8a9df8c9]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_signal_emit_valist+0x125b)[0x7faf8a9ecdcb]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_signal_emit+0x93)[0x7faf8a9ed143]
/snap/gimp/393/usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0(gtk_widget_activate+0x82)[0x7faf8b748fb2]
/snap/gimp/393/usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0(gtk_menu_shell_activate_item+0x15d)[0x7faf8b64112d]
/snap/gimp/393/usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0(+0x1503f9)[0x7faf8b6413f9]
/snap/gimp/393/usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0(+0x13db9b)[0x7faf8b62eb9b]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_closure_invoke+0x1b2)[0x7faf8a9cb8b2]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(+0x26dda)[0x7faf8a9dedda]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_signal_emit_valist+0x98d)[0x7faf8a9ec4fd]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_signal_emit+0x93)[0x7faf8a9ed143]
/snap/gimp/393/usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0(+0x25922d)[0x7faf8b74a22d]
/snap/gimp/393/usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0(gtk_propagate_event+0xac)[0x7faf8b62cccc]
/snap/gimp/393/usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0(gtk_main_do_event+0x2f3)[0x7faf8b62d0c3]
/snap/gimp/393/usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0(+0x5f6d0)[0x7faf8b4956d0]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0(g_main_context_dispatch+0x28d)[0x7faf8a8d399d]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0(+0x59c40)[0x7faf8a8d3c40]
/snap/gimp/393/data-dir/gnome-platform/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0(g_main_loop_run+0x83)[0x7faf8a8d3f33]
/snap/gimp/393/usr/bin/gimp(app_run+0x425)[0x55ee782cd005]
/snap/gimp/393/usr/bin/gimp(main+0x37e)[0x55ee77c8fc4e]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf3)[0x7faf8ba14083]
/snap/gimp/393/usr/bin/gimp(_start+0x2e)[0x55ee77c8fdce]

### Teminal output of app

_No response_