Bug 461431

Created attachment 153468 [details]
Image displaying observed and expected results and a mockup for a new option.

SUMMARY
***
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***

This relates to the Icons-only Task Manager.

STEPS TO REPRODUCE
1. Have at least one window open and visible.
2. Have at least two instances of an application grouped.
3. Enable both the "Show tooltips" and "Highlight windows when hovering over task tooltips" options.
4. Click on the application with two instances and hover over the thumbnails.

OBSERVED RESULT
All other windows are hidden to show only the one hovered over with the tooltip. See the upper-left "ObservedResult" image.

EXPECTED RESULT
The windows are not hidden and the one hovered over with the tooltip is brought to the front. See the bottom-left "Expected Result" image.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Linux 6.0.6-arch1-1 (64-bit)
(available in About System)
KDE Plasma Version: 5.26.2
KDE Frameworks Version: 5.99.0 
Qt Version: 5.15.7

ADDITIONAL INFORMATION
This can be another option in Icons-only Task Manager Settings. See the right-side "Mocked New Option" image.