Bug 507516

Summary:	Performing a swipe gesture with a touchscreen, the password input field is visible during the gesture and hides after completion again.
Product:	[Plasma] plasmashell	Reporter:	kde.elm430
Component:	Screen locking	Assignee:	Plasma Bugs List <plasma-bugs-null>
Status:	CONFIRMED ---
Severity:	minor	CC:	fanzhuyifan, nate, tramonti.luca18
Priority:	NOR	Keywords:	regression
Version First Reported In:	6.4.3
Target Milestone:	1.0
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description kde.elm430 2025-07-26 17:06:32 UTC

SUMMARY
Performing a swipe gesture with a touchscreen, the password input field is visible during the gesture and hides after completion again.

STEPS TO REPRODUCE
1. Lock the screen
2. Swipe one the screen

OBSERVED RESULT
The password input field is visible only during the swipe gesture

EXPECTED RESULT
The password input field should be permanently displayed after completing the swipe gesture

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch Linux
KDE Plasma Version: 6.4.3
KDE Frameworks Version: 6.16.0
Qt Version: 6.9.1

Comment 1 kde.elm430 2025-08-04 20:36:30 UTC

Introduced by https://invent.kde.org/plasma/plasma-desktop/-/commit/305d88e050ffe4018544e6d4b7c5c6730ca5c0d4.
Qt synthesizes a mouse event, therefore `containsMouse` is false and the fadeoutTimer is restarted.
I unfortunately don't have any knowledge in Qt/Qml, but per documentation wrapping the MouseArea in a MultiPointTouchArea might help.

Comment 2 tramonti.luca18 2025-09-25 09:26:48 UTC

I am also experiencing this bug, unlocking the device using touch is very hard and awkward to do (you have to tap and hold anywhere on the screen and quickly tap the password field before it fades out), hope it gets fixed soon. This should probably be higher than low priority