Bug 451136

Summary: wobbly windows bug
Product: [Plasma] kwin Reporter: barsnetpro
Component: effects-variousAssignee: KWin default assignee <kwin-bugs-null>
Status: REPORTED ---    
Severity: normal CC: eduardosareias
Priority: NOR    
Version First Reported In: 5.24.2   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: wobbly windows bug (arch)
wobbly windows bug
wobbly window bug (nitrux)
wobbly window bug (manjaro)
wobbly window bug (kde neon)
wobbly window bug (debian)
wobbly window bug - guide

Description barsnetpro 2022-03-04 18:17:23 UTC
STEPS TO REPRODUCE
1. Open systemsettings
2. Go to effects
3. enable wobbly windows
4. go to wobbly windows settings and enable advanced mode
5. set settings:
    stiffness - 50
    drag - 100
    move factor - 25
6. move window

RESULT:
wobbly windows bug (video)

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: arch/debian based, ubuntu based, arch based (all)
KDE Plasma Version: 5.24.2/*
KDE Frameworks Version: 5.91.0/*
Qt Version: 5.12.2/*
Session: X11
LoginManager: sddm/*
gpu: amd/*
Comment 1 barsnetpro 2022-03-04 18:47:02 UTC
Created attachment 147279 [details]
wobbly windows bug (arch)
Comment 2 barsnetpro 2022-03-04 18:48:05 UTC
Created attachment 147280 [details]
wobbly windows bug
Comment 3 barsnetpro 2022-03-05 12:18:22 UTC
Created attachment 147292 [details]
wobbly window bug (nitrux)
Comment 4 barsnetpro 2022-03-05 14:43:33 UTC
*wobbliness - max
Comment 5 barsnetpro 2022-03-05 17:53:37 UTC
Created attachment 147296 [details]
wobbly window bug (manjaro)
Comment 6 barsnetpro 2022-03-05 17:54:23 UTC
Created attachment 147297 [details]
wobbly window bug (kde neon)
Comment 7 barsnetpro 2022-03-05 17:56:49 UTC
Created attachment 147298 [details]
wobbly window bug (debian)
Comment 8 barsnetpro 2022-03-05 18:03:51 UTC
Created attachment 147301 [details]
wobbly window bug - guide
Comment 9 Eduardo Correia 2025-06-20 10:00:52 UTC
This bug is still present on Plasma 6.3.5, or at least a very similar one, but only happens when I have the "advanced settings" for wobbly windows activated. For example I currently have these as advanced settings, from top to bottom: 40, 60, 20. When I move a window holding its title bar, stop moving it but keep the left mouse button pressed on it, the window starts "wobbling" uncontrollably and stops right when I let go of the mouse button. 

Can be always reproduced. Grab a window, move it, stop moving it but keep holding the mouse button, bug appears, and stops happening right when you let go of the mouse button.

If I switch off the advanced options on wobbly windows, this bug does not happen. Something wrong with those advanced configs.
Comment 10 Eduardo Correia 2025-06-20 10:05:13 UTC
(In reply to Eduardo Correia from comment #9)
> This bug is still present on Plasma 6.3.5, or at least a very similar one,
> but only happens when I have the "advanced settings" for wobbly windows
> activated. For example I currently have these as advanced settings, from top
> to bottom: 40, 60, 20. When I move a window holding its title bar, stop
> moving it but keep the left mouse button pressed on it, the window starts
> "wobbling" uncontrollably and stops right when I let go of the mouse button. 
> 
> Can be always reproduced. Grab a window, move it, stop moving it but keep
> holding the mouse button, bug appears, and stops happening right when you
> let go of the mouse button.
> 
> If I switch off the advanced options on wobbly windows, this bug does not
> happen. Something wrong with those advanced configs.

I should clarify that this bug only happens when you use the advanced settings for this effect, and only at certain level combinations. The combination I said, triggers this bug.