https://bugs.kde.org/show_bug.cgi?id=509979
Bug ID: 509979
Summary: Popup menus are stuck to a portion of the screen under
fractional scaling on Hyprland/Sway
Classification: Developer tools
Product: Qt/KDE Flatpak Runtime
Version First unspecified
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: ---
Created attachment 185310
--> https://bugs.kde.org/attachment.cgi?id=185310&action=edit
A demonstration of this bug.
SUMMARY
Flatpak applications using Qt as their toolkit have their popup menus
constrained to the left half of the screen when using fractional scaling on
Hyprland or Sway. As an example, right-clicking on the right side of OBS's
window causes the popup menu to appear in the middle of the screen instead of
directly next to the cursor. I was also able to reproduce this issue with
Shotcut (Qt 6.8.3), KeePassXC (Qt 5.15.15) and Vorta (Qt 6.9).
STEPS TO REPRODUCE
1. Install OBS via Flatpak
2. Set Hyprland's or Sway's scaling to a fractional value
3. Open OBS, then right-click on the right side of its window
OBSERVED RESULT
The popup menu appears in the middle of the screen.
EXPECTED RESULT
The popup menu appears directly next to the cursor.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch Linux, Kernel 6.16.8.arch3-1
KDE Plasma Version: ---
KDE Frameworks Version: ---
Qt Version: 5.15.15 - 6.9
ADDITIONAL INFORMATION
This issue does not occur with natively installed Qt applications or when their
Flatpak variants are run under Xwayland.
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