Bug 505660

Summary: Add warning so people know what they're getting into if they customize Wobbly Windows in such a way that makes windows go completely bananas
Product: [Plasma] kwin Reporter: Tech-Tac <im.tech.tac>
Component: effects-variousAssignee: KWin default assignee <kwin-bugs-null>
Status: CONFIRMED ---    
Severity: wishlist CC: moeenio, nate
Priority: NOR Keywords: accessibility
Version First Reported In: 6.3.5   
Target Milestone: ---   
Platform: Other   
OS: Linux   
See Also: https://bugs.kde.org/show_bug.cgi?id=506140
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: Wobbly windows freaking out

Description Tech-Tac 2025-06-16 12:59:15 UTC 
SUMMARY
When enabling Wobbly Windows then advanced mode and setting extreme values for the advanced parameters, moving or resizing windows with these configurations applied causes theme to get stuck seemingly forever in a rapidly moving state that may cause nausea or even seizures to some users, in addition to unusability where interacting with a window very rapidly moving and never settling is near impossible.

STEPS TO REPRODUCE
1. Enable the Wobbly Windows window effect
2. In its config, enable advanced mode
3. Set all parameters to their max values
4. Apply and attempt moving a window

OBSERVED RESULT
Windows move frantically across the screen and never settle down

EXPECTED RESULT
a. Not to be able to set such high value combinations in the first place
b. Otherwise, have them handled more gracefully
c. Or at the very least show a warning

SOFTWARE/OS VERSIONS
Linux: Arch Linux
KDE Plasma Version: 6.3.5
KDE Frameworks Version: 6.15.0
Qt Version: 6.9.1

ADDITIONAL INFORMATION
There are other lower value combos that induce this, especially on maximization.
Comment 1 Tech-Tac 2025-06-16 13:10:38 UTC 
Created attachment 182304 [details]
Wobbly windows freaking out

Here is a recording showing various configurations and their effect
Comment 2 Nate Graham 2025-06-16 17:01:38 UTC 
Well, you did say you wanted maximum wobbling. :) 

I'm going to call this "not a bug: since you deliberately enabled an off-by-default effect, configured it, enabled advanced mode, and then pushed all the settings to absurd levels. You basically went out of your way to shoot yourself in the foot here.

We could in principle reduce the effects on some of these sliders, but are you sure you want that? Part of the charm of this effect it its sheer silliness. I don't know how much sense it makes to reduce that in the interests of safety for people who intentionally configure a silly effect for maximum silliness. This isn't iPadOS; we don't need rubber bumpers on absolutely everything. :)
Comment 3 Tech-Tac 2025-06-16 17:13:29 UTC 
Fine, but I'd suggest putting at least a warning of what to expect from bumping all settings to the max.
Comment 4 moeenio 2025-06-20 20:54:00 UTC 
I also think an explicit seizure warning would be welcome.
Comment 5 Nate Graham 2025-06-25 18:15:11 UTC 
Yeah, maybe we should at least add a warning so that you know clicking "Apply" could be dangerous.