https://bugs.kde.org/show_bug.cgi?id=459301
Bug ID: 459301
Summary: Firefox / Discord use a cross-fade animation when
changing browser tabs
Classification: Unclassified
Product: kwin
Version: 5.25.90
Platform: Archlinux
OS: Linux
Status: REPORTED
Severity: minor
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: mopylr...@mozmail.com
Target Milestone: ---
Quick preface; I'm not sure if this is a bug, and if it isn't I apologise.
However I'm choosing to report it anyway, as it is unexpected behaviour that
I'm not entirely sure if I like. The effect is nice and it works in some apps,
but for web browsing it's rather in the way of things :)
SUMMARY
When changing tabs in Firefox, the transition between tabs use a cross-fade
animation, like seen in other KDE apps such as Dolphin and the KDE Plasma
System Settings app. Discord (Chromium) is also affected.
I was not able to observe this in other apps, even other Chromium-based apps
such as Signal and Authy.
I confirmed that this is an animation controlled by Kwin/Plasma as the
animation speed setting affects the fade speed.
STEPS TO REPRODUCE
1. Make sure Plasma has animation speed set to anything but instant.
2. Launch Firefox (or possibly other web-browser based apps such as Discord.)
3. Open multiple tabs if you can.
4. Switch tabs or navigate to different views within the app.
OBSERVED RESULT
Switching between tabs/application views use a cross-fading animation.
Video: https://www.youtube.com/watch?v=3_w3sXy_ewA
EXPECTED RESULT
Instant, non-animated transitions between browser tabs, like in Plasma 5.25.5
and older.
SOFTWARE/OS VERSIONS
Linux: Arch Linux, kernel 5.19 ("Linux Zen" kernel)
KDE Plasma Version: Plasma 5.25.90
KDE Frameworks Version: 5.98
Qt Version: 5.15.6
ADDITIONAL INFORMATION
Observed on Plasma Wayland, and thus putting this in the wayland-generic
component; please move it if that is wrong. I'm not sure which component
specifically handles these animations.
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