Hyprland misplaces damage in Gamescope

[Szwagi]

I'm using gamescope for letterboxing a 2368x1332 window on a 2560x1440 monitor .
The window is drawn in the center of my monitor (96,54), but Hyprland thinks the window is at (0,0), and calculates damage in the wrong spot.

1. hyprctl keyword debug:damage_blink true

2. Run a game in letterboxing mode. I could not replicate this using glxgears or vkcube. I am using Momentum Mod (free on Steam) in my case. gamescope -h 1332 -H 1440 -S integer -- ./momentum.sh

3. The game is in the center of the monitor, but the damage starts at top left, and the bottom right of the game is never updated unless something else damages it (cursor).

debug {
    full_cm_proto = true
}

env = LIBVA_DRIVER_NAME,nvidia
env = NVD_BACKEND,direct

env = __GLX_VENDOR_LIBRARY_NAME,nvidia

env = GDK_BACKEND,wayland,x11,*
env = QT_QPA_PLATFORM,wayland;xcb
env = SDL_VIDEODRIVER,wayland
env = CLUTTER_BACKEND,wayland
env = ELECTRON_OZONE_PLATFORM_HINT,wayland

env = XDG_CURRENT_DESKTOP,Hyprland
env = XDG_SESSION_TYPE,wayland
env = XDG_SESSION_DESKTOP,Hyprland

env = GTK_THEME,Breeze-Dark
env = QT_QPA_PLATFORMTHEME,qt6ct
env = QT_WAYLAND_DISABLE_WINDOWDECORATION,1

env = __GL_GSYNC_ALLOWED,1
env = __GL_VRR_ALLOWED,1

env = TERMINAL,/usr/bin/alacritty
env = EDITOR,/usr/bin/nano
env = VISUAL,/usr/bin/nano