https://bugs.kde.org/show_bug.cgi?id=480421
TraceyC <kde...@tlcnet.info> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
CC| |kde...@tlcnet.info
Status|REPORTED |CONFIRMED
--- Comment #11 from TraceyC <kde...@tlcnet.info> ---
I was able reproduce this issue reliably by restarting Plasma with a bottom
panel, centered, with only the icons-only task manager.
On my system, I have to have spacers in another panel on the same display to
reproduce.
```
systemctl restart --user plasma-plasmashell.service
```
TL;DR SUMMARY
Creating a panel with the icons-only task manager and nothing else, on an
external display connected to the laptop, I did *not* initially see the bug. I
saw it after at least one reboot and then was reliably able to reproduce when
restarting the system, or just the plasma service
After changing some settings, the icons no longer stay too small, but I seem
them slowly going from small to normal during panel animation.
Other settings cause the panel to draw in non-desirable ways, so it may be that
there is weird interaction between the panel animations and the icons-only task
manager widget.
Right clicking and going to panel settings will restore it to the proper size
(I found through testing that your results may vary if you change settings,
even if you set them back to what they were later)
Launching an application from it does *not* restore the panel size for me as in
the original report. Either changing workspaces or opening the panel config
(causing a redraw) fixes the panel.
There seems to be weird interaction between panel animation, widget drawing /
animation and something involving a loop that is probably single threaded.
DETAILED TESTING
**Original bug**
I started off with 3 panels, in Wayland. These are their initial settings that
seem to matter in relation to the bug:
1 - laptop display - Bottom, fit width
2 - Main external display - Bottom, center, fit content
3 - Main external display - Top, fit width
4 - Second external display - no panel
Panel settings where the bug is present (bottom panel on external monitor). To
reproduce, just restart plasmashell.
- Bottom
- Floating
- Translucent
- Center
- Fit content
- Always visible
I changed it from "fit content" to "fill width", then the task manager did not
exhibit the bug
Another panel at the top does not have this issue. I have used various settings
with it, it also has icons-only task manager
Floating / not floating
Centered / fit to screen
Translucent / solid
While changing settings to try to narrow down what might be causing the task
manager to redraw correctly I found a few other problems
- Changing settings of the bottom panel where I saw the bug to something
different, then back to what it had been, I no longer saw the bug when
restarting Plasma. It might reappear after a reboot, I don't know.
- Changing all 3 panels to fit content results in very slow panel animation,
especially with spacers
- With the animation being slow, the bottom panel looks smeared, then has the
small icons but they eventually pop out to expected size. This is shown in the
video I'm attaching.
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