https://bugs.kde.org/show_bug.cgi?id=429319
Bug ID: 429319
Summary: Task switcher with options "stacking order" + "one
window per app" not behaving nicely
Product: kwin
Version: 5.20.3
Platform: Archlinux Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: cont...@neillambert.com
Target Milestone: ---
SUMMARY
There was something unexpected going on when I was aiming for a certain result
from the task switcher.
"If Only one window per application is selected then only the last used
instance of an application is contained in the list. Switching to other
instances is possible only via the panel then."
https://docs.kde.org/trunk5/en/kde-workspace/kcontrol/kwintabbox/index.html
When sort order is "Recently used" this works correctly
When sort order is "Stacking order" this does not work as expected
When sort order is "Stacking order": a PREVIOUSLY used instance of the
application is contained in the list.
Why this matters:
- Alt+Tab to walk through applications (as if groups)
- Alt+` to walk through instances of the current application
Alt+Tab should then not display a different window of the current application,
only Alt+` should.
STEPS TO REPRODUCE
1. Under System Settings > Window Management > Task Switcher
2. Sort order: choose "stacking order"
3. Check "only one window per application"
4. Open 2 chrome windows
5. Open 2 terminal windows
6. Open 2 firefox windows
7. Make sure each window has something recognizable
OBSERVED RESULT
The Alt+Tab list shows all 3 applications, but not the last used.
What is displayed is the bottom of the stack.
And, when Alt+` is used, the next time you press Alt+Tab you see the other
window of the current application (which should definitely not happen).
EXPECTED RESULT
With "one window per application" Alt-Tab should never switch to another window
of the same application.
Alt-Tab should just cycle the top of the stack
Alt-` should bring stuff up from underneath
SOFTWARE/OS VERSIONS
Linux: Arch 5.9.8-zen1-1-zen
KDE Plasma Version: 5.20.3
KDE Frameworks Version: 5.75.0
Qt Version: 5.15.1
ADDITIONAL INFORMATION
I hope this was clear enough :-)
I understand why this is happening, but "stacking order" + "one window per app"
together should work differently i.e.: it should work like in the docs: "If
Only one window per application is selected then only the last used instance of
an application is contained in the list."
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