Rounded corners cause corners of windows to be cut off at a 45 degree angle, instead of extending to border

[gnarlsnishi]

Hyprland version

Hyprland 0.50.1 built from branch at commit 4e242d0 ([gha] Nix: update inputs).
Date: Sat Jul 19 21:37:06 2025
Tag: v0.50.1, commits: 6291
built against:
aquamarine 0.9.2
hyprlang 0.6.3
hyprutils 0.8.1
hyprcursor 0.1.12
hyprgraphics 0.1.5

no flags were set

Regression

Yes

Describe the bug

Just a minor rendering glitch. When rounded corners are set, the corners of the actual window content are cut off at a 45 degree angle, instead of extending all the way to the border. Picture attached below to illustrate what I mean. Issue is present with both GTK and Qt apps.

Reproduction steps

Set decoration:rounding in hyprland config.

System info and config

hyprlandinfo.txt

[vaxerski]

uhh... I don't get this.