Phil Beauvoir

> Just want to make clear, it's not a change introduced by the upgrade from Ventura to Sonoma. The issue was introduced with the minor update of Sonoma itself (14.5...

> NSMenu engineer at Apple here. This was an unintentional change (i.e., a bug) introduced in Sonoma 14.6. It is fixed in macOS Sequoia 15.1, beta 5, released this morning....

On Mac M1 Mini: ``` Open Shell Open returned after 0.005s ``` On Windows, try resizing the Shell...

is this a restriction of the operating system? Maybe not, because you say it works on native apps. If you try your snippet on Mac you can't navigate the buttons...

A user of our RCP app [ran into this](https://github.com/archimatetool/archi/issues/1036#issuecomment-2118878984) on NixOS with `bmp` files so it can happen. I replaced the files with `png` files but can't guarantee that some...

Crash log attached. [hs_err_pid4382.log](https://github.com/user-attachments/files/15777506/hs_err_pid4382.log)

The area of interest is, I think, here: https://github.com/eclipse-platform/eclipse.platform.swt/blob/ece679cd0c03d2bbb15ac1d07c6e81bddce02ab9/bundles/org.eclipse.swt/Eclipse%20SWT/cocoa/org/eclipse/swt/widgets/Text.java#L1752-L1782 Perhaps the undo event is being sent on an already disposed widget?

It seems that the sequence of events that causes the crash is: 1. Type some text into a Multi Text control 2. Dispose of the Text control 3. Press Cmd-Z...

> when you see a exception in a foreign library (here: libobjc.A.dylib) - isn't it better to report the issue there (https://github.com/gnustep/libobjc)? The problem seems to be SWT with `NSUndoManager`...

I couldn't reproduce this with a simple stand-alone SWT snippet. Perhaps it's a problem with the `ExtendedMarkersView`? If the problem is there perhaps you could open an issue on Platform...