Wrong menubar entry activated on click for XWayland apps if fractional scaling is used but XWayland scale is disabled

[M4he]

Hyprland Version

System/Version info

Hyprland: git e68c07d8096ee5f83e29508c8762279ab80a924b via [official NixOS Flake](https://github.com/hyprwm/hyprland-wiki/blob/27b9014e80ff216327c7a8cdec2a6ac638a31162/pages/Nix/Hyprland%20on%20NixOS.md?plain=1#L78-L93) System: - OS: NixOS 23.11 (Tapir) - GPU: Intel CometLake-U GT2 UHD Graphics

Bug or Regression?

Bug

Description

I'm using

xwayland {
    force_zero_scaling = true
}

and a fractional screen scaling of 1.25.

When I use an XWayland application such as GIMP or Krita, clicking menubar items will often activate an item to the left instead until I move the cursor. It seems like the mouse click event coordinates are not correctly calculated when XWayland scaling is turned off but fractional scaling is turned on.

It only seems to affect menubars as other elements of the UI of those applications react just fine.

How to reproduce

1. Set xwayland { force_zero_scaling = true } in hyprland.conf.
2. Apply a fractional screen scale, e.g. monitor=,preferred,auto,1.25.
3. Open an XWayland application, e.g. GIMP or Krita.
4. In the topmost menubar of the window click on menus that are located more to the right side (not the first ones).
5. Do not move the cursor while or after clicking.
6. Menus to the left of the click event will be activated instead.

Crash reports, logs, images, videos

Menus in Krita:

krita_menus.webm

[hdm9527]

Same problem, the idea window can only be enlarged, not reduced.

[dnvery]

Has anyone managed to make a patch to fix it?

[phoeshow]

same problem ,when I use gimp and click menu. the selection jump to previous one always.