Bug 437794

Summary: Textual list of grouped windows do not highlight the window anymore on mouse over
Product: [Plasma] plasmashell Reporter: g111
Component: Task Manager and Icons-Only Task Manager widgetsAssignee: Eike Hein <hein>
Status: RESOLVED FIXED    
Severity: normal CC: bharadwaj.raju777, nate, plasma-bugs-null, qydwhotmail
Priority: NOR Keywords: regression
Version First Reported In: 5.21.4   
Target Milestone: 1.0   
Platform: Other   
OS: Linux   
Latest Commit: https://invent.kde.org/plasma/plasma-desktop/-/commit/ec2d3d56a7eb0ac7bd6eb2a3fb86038fad0f000e Version Fixed In: 5.24
Sentry Crash Report:

Description g111 2021-05-28 17:06:46 UTC 
SUMMARY
In a former KDE version (that came with kubuntu 20.10) it was possible to highlight the related window on the desktop when hovering over an entry in the textual list of windows of a window group. All other windows were set transparent so you could see the related window.

In the current version (kubuntu 21.04, plasma 5.21.4) this is not possible anymore.

STEPS TO REPRODUCE
1. configure the task manager to group windows of the same application.
2. configure the task manager to show the textual list of window entries when clicking on a grouped window button.
3. open e.g. 3 konsole windows.
4. open another bigger application window (like thunderbird or something) that covers the konsole windows.
5. click on the grouped konsole window button in the task manager.
6. hover the mouse on one of the entries.

OBSERVED RESULT
Nothing happens.

EXPECTED RESULT
The related konsole window should be shown on the desktop and all other windows should be set to be transparent.

SOFTWARE/OS VERSIONS
Operating System: Kubuntu 21.04
KDE Plasma Version: 5.21.4
KDE Frameworks Version: 5.80.0
Qt Version: 5.15.2
Kernel Version: 5.11.0-17-generic
OS Type: 64-bit
Graphics Platform: X11
Comment 1 Nate Graham 2021-06-08 21:10:05 UTC 
Can reproduce.
Comment 2 Bharadwaj Raju 2021-06-09 07:48:07 UTC 
I can make it highlight the windows, but then the textual list disappears for the duration of the highlight.

This can be fixed by making it a tooltip, but then keyboard navigation doesn't work, which is a much worse regression. Probably because tooltip implies WindowDoesNotAcceptFocus flag.

Any way of having keyboard focus enabled *and* having the list visible?
Comment 3 Nate Graham 2021-06-09 15:04:11 UTC 
The fact that the tooltips can't get keyboard focus is really a bug that needs to be fixed if only for accessibility reasons. Fixing that would be better then working around it.