[BUG] Black Corners in Rounded Floating Dash to Panel

[TaimoorIkram]

I tried to first add this issue to dash to panel, but they said to test the extension alone first, which revealed that blur my shell was the cause of the problem.

The issue

Blur my shell extension's panel blur sticks behind the panel from dash to panel. That is not bad in itself, but I get to see black artifacts from the corners not covered by the rounded corner setting in the dash to panel extension. As a result a it feels that the rounded cornered taskbar which looks so good is locked inside a weird black rectangle as the image shows. The one on the left is overview and the one on the right is when it is over the desktop or any windows.

The behaviours

• The black artifacts in the corner show in non-overview mode over any window.

  

• When I am in the task overview, the artifact vanishes, because the back blur vanishes.

  

• On disabling the Panel Blur the effect goes away and so does the blur, leaving the dash to panel background just translucent, not blur.

  

• On setting the blur style to static, the background appears instead of the actual item behind the panel and weirdly positioned. Sorry for this image, you'll have to focus a bit to see the break at the right bottom half region of the screen. My desktop background is a bit dark.

Key Observation

After some tinkering I found out that the Panel Blur section is the cause of the bug. It has options to deal with panels of my kind.

About my Dash to Panel settings

I will quote the most prominent ones here. I have added bottom and side margins to the panel to make it hover on the screen, therefore any settings I change on the Panel menu of this extension, the blur behind appears at weird places.

System Details Report

Note that I have tried all 4 GUI modes (GNOME, GNOME on Wayland, Ubuntu and Ubuntu on Wayland) and none show any different behaviour with this extension on. Though I use GNOME on Wayland and have tested the aforementioned settings therein.

Report details

• Date generated: 2025-10-07 13:54:01

Hardware Information:

• Hardware Model: HP HP Pavilion Laptop 15-ck0xx
• Memory: 8.0 GiB
• Processor: Intel® Core™ i7-8550U × 8
• Graphics: Intel® UHD Graphics 620 (KBL GT2)
• Graphics 1: NVIDIA GeForce 940MX
• Disk Capacity: 1.3 TB

Software Information:

• Firmware Version: F.15
• OS Name: Ubuntu 24.04.3 LTS
• OS Build: (null)
• OS Type: 64-bit
• GNOME Version: 46
• Windowing System: Wayland
• Kernel Version: Linux 6.8.0-85-generic

[dudumaroja]

i somehow geting this on windows too

[mgs96]

I think I'm experiencing a similar issue when using dock mode, I use margin bottom and floating mode on the dash to panel extension and this causes that the bottom part of the dash to be blurred when the dash appears, when I disable the "Panel blur" toggle, this effect dissapears.