https://bugs.kde.org/show_bug.cgi?id=461002
Bug ID: 461002
Summary: "Invert Window Colours" effect cancelled by "Wobbly
Windows" effect when window is moved or resized in
Plasma 5.26.1
Classification: Plasma
Product: kwin
Version: 5.26.1
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: effects-various
Assignee: kwin-bugs-n...@kde.org
Reporter: a.skemb...@gmail.com
Target Milestone: ---
SUMMARY
After updating to Plasma 5.26.1 from 5.25.5, when a window's colours are
inverted via KWin's "Invert Window Colours" or the "Invert Effect" (please
note, this is *different* from the "Invert Screen Colours" effect), the window
colours temporarily revert to the normal ones when the window is moved or
resized. This happens only if the "Wobbly Windows" effect is activated. This
did not happen in 5.25.5 (the window was wobbly without the colours reverting
to normal).
As you may imagine, this is quite distracting and unpleasant, as there are
colours flashing about every time an inverted window is moved.
Disabling the "Wobbly Windows" effect seems to fix the issue, so I guess there
is something amiss when the two effects are combined.
STEPS TO REPRODUCE
1. Invert a window's colour's via an appropriate KWin shortcut OR use the
"Invert Effect" (but not the "Invert Screen Colours" effect)
2. Ensure "Wobbly Windows" effect is activated.
3. Move (either by dragging the toolbar or via the "move" modifier key) or
resize the window.
OBSERVED RESULT
Window colours revert to normal while the move / resize operation is taking
place. The window returns to its reverted mode once the move / resize operation
is complete (e.g. mouse button has been released)
EXPECTED RESULT
Window colours should remain inverted during the move / resize operation.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: OpenSUSE Tumbleweed
(available in About System)
KDE Plasma Version: 5.61.1
KDE Frameworks Version: 5.99
Qt Version: 5.15.6
ADDITIONAL INFORMATION
The "Invert Screen Colours" effect mentioned above (which is different to the
"Toggle invert effect"), which also inverts the whole screen, does not seem to
trigger the bug.
If I recall correctly, Nate Graham mentioned at another instance that one of
the effects is built-in, while the other is a "desktop effects" version (not
sure which is which, though).
Also, moving the window via the "Meta+arrow key" route does not seem to trigger
the effect either (the inverted window is moved without any colour change
triggered. It is also not triggered during the "maximise" animation that
happens when "Meta+PgUp" is used to maximise the window.
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