Bug 515112

Summary: Touchscreen pinch zoom does not work anymore
Product: [Plasma] kwin Reporter: astrocubehd
Component: GesturesAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED DOWNSTREAM    
Severity: normal    
Priority: NOR    
Version First Reported In: 6.5.1   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description astrocubehd 2026-01-26 14:35:47 UTC 
SUMMARY
I have a laptop with a built in touchscreen. When I first bought it, I could usually pinch to zoom in applications like xournal++. This would work without issue. On the 5th of  November I updated my whole system and suddenly the pinch to zoom feature no longer worked. With a Live OS I checked if the pinch to zoom worked on a older of KDE Plasma (6.2.0) and it did.

STEPS TO REPRODUCE
1.  Try to pinch to zoom in Version 6.5.1 - 6.5.5 

OBSERVED RESULT
It tries to swipe up and down at the same time, causing the screen to freak out and sometimes puts the cursor into top left corner and presses whatever is there

EXPECTED RESULT
I zoom into (or out of)  Picture/Document/Other file 

SOFTWARE/OS VERSIONS
Linux/KDE Plasma:  EndeavourOS / 6.5.5
KDE Plasma Version:  6.5.5
KDE Frameworks Version:  6.22.0
Qt Version: 6.10.1

ADDITIONAL INFORMATION
Laptop used : Lenovo Thinkpad X1 Yoga Gen 6
Comment 1 astrocubehd 2026-01-26 14:43:47 UTC 
Just figured out, it works on a NixOS LiveOS with KDE Plasma 6.5.5. I suspect it then may be an Arch/EndeavourOS issue.