Bug 405404

Summary:	Walk Through Windows of Current Application does not work with Keyboard Layout with dead keys
Product:	[Plasma] kwin	Reporter:	lucas.genzelis
Component:	general	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	bugseforuns, butirsky, kwizzz, ptselios, sanchez.guido, yaomtc
Priority:	NOR	Flags:	kwizzz: Wayland+ kwizzz: X11-
Version First Reported In:	5.27.4
Target Milestone:	---
Platform:	unspecified
OS:	Linux
URL:	https://bugreports.qt.io/browse/QTBUG-108761
See Also:	https://bugs.kde.org/show_bug.cgi?id=451966
Latest Commit:		Version Fixed/Implemented In:	Qt 6.6.0
Sentry Crash Report:

Description lucas.genzelis 2019-03-12 20:30:04 UTC

SUMMARY


STEPS TO REPRODUCE
1. Start with a fresh install (or Live-CD)
2. Go to Keyboard under System Settings, and select Layout *English (US)* with Variant *English (US, intl., with dead keys)*
3. Open two or more windows of the same program (e.g., Firefox), and let one of them be the active window
4. Press Alt+` to switch to another window of the program 

OBSERVED RESULT
Nothing happens

EXPECTED RESULT
The shortcut should allow to switch between windows of the program, as always.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Kubuntu 18.04
KDE Plasma Version: 5.12.7
KDE Frameworks Version: 5.44.0
Qt Version: 5.9.5

ADDITIONAL INFORMATION
Workaround: leave the first entry of Keyboard Layouts as English (US) (i.e.,  Default variant), and add the desired layout as a *second* entry. Apply changes, and then select the desired layout from the bottom toolbar. Now you can write with the layout that you chose, but the aforementioned shortcut still works as expected.

Comment 1 Patrick Silva 2022-03-29 14:47:40 UTC

I use US and brazilian portuguese layouts. Alt+~ (default shortcut to walk through the current app in reverse order) only works when pressed twice. To walk through the current app in normal order, I need to press alt+shift+` twice even if the shortcut configured in TasK Switcher KCM is the default alt+`.  Positioning US layout as the first one in Keyboard KCM did not help on my system.

Operating System: KDE neon Unstable Edition
KDE Plasma Version: 5.24.80
KDE Frameworks Version: 5.93.0
Qt Version: 5.15.3
Graphics Platform: Wayland

Comment 2 kwizzz 2023-05-02 20:19:22 UTC

Updated ticket data, as issue is still there on 5.27.4 on Fedora, as well as openSUSE tumbleweed (wayland only).

When using US intl with dead keys (in a program like kate), you need to type a space after the ` (backtick) in order to get a backtick character, or type a second backtick.

The same applies to window switching in kwin with Alt+`: when using US intl with dead keys you
either have to press Alt+` twice
or keep Alt key pressed, then type ` followed by a space (w/o releasing the Alt key).

Keyboard layouts with dead keys should not cripple Alt+`.

Note that this bug is only on Wayland, not with X (where Alt+` behaves the same in US and US intl with dead keys.)

(Here are the details for Fedora
Operating System: Fedora Linux 38
KDE Plasma Version: 5.27.4
KDE Frameworks Version: 5.105.0
Qt Version: 5.15.8
Kernel Version: 6.2.13-300.fc38.x86_64 (64-bit)
Graphics Platform: Wayland)

Comment 3 David Edmundson 2023-05-04 08:24:35 UTC

*** Bug 451966 has been marked as a duplicate of this bug. ***

Comment 4 David Edmundson 2023-05-04 08:25:15 UTC

*** Bug 449482 has been marked as a duplicate of this bug. ***

Comment 5 Andrey 2023-05-04 16:53:29 UTC

As far as I can tell, this is just a special case of the more common bug 453661 which was fixed in Qt 6.6.0:
https://bugreports.qt.io/browse/QTBUG-108761

Please correct me if I'm wrong.

*** This bug has been marked as a duplicate of bug 453661 ***

Comment 6 Peter Tselios 2023-05-13 10:40:03 UTC

So, the resolution to this will come with KDE 6.x ???

Comment 7 Andrey 2023-05-13 13:02:26 UTC

Yes

Comment 8 Guido Sanchez 2023-05-13 13:36:01 UTC

Apparently is a merge request for that has the patches for Qt5

https://invent.kde.org/qt/qt/qtbase/-/merge_requests/239