Bugs rendering gtk popups. they are scaled weirdly and skewed or rendered incorrectly at all

[JaanDev]

Hyprland version

jaan@JA ~> hyprland --version
Hyprland 0.50.1 built from branch  at commit 4e242d086e20b32951fdc0ebcbfb4d41b5be8dcc  ([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

i think it is

Describe the bug

the popups in gtk apps are weird sometimes. i've faced this issue in "cassette" app with is a yandex music client, and in gnome calculator when entering a function and autocomplete window being very weird and in some places too maybe. this is for sure hyprland issue, this doesnt happen on gnome at all.

bugged_gtk_popup2.mp4

calculator_bug.mp4

gtkbug2.mp4

here is how it looks on gnome:

2025-09-04.21-07-39.mp4

Reproduction steps

it would probably be easier to reproduce in gnome calculator. open it, then type a function like acosh, then delete its symbols one by one and see the autocompletion window acting weirdly (watch video)

System info and config

systeminfo.txt
hyprland.conf.txt
hyprland.log

if i need to provide more info, tell me please =)

[tekstryder]

nVidia I'm guessing?

If so, that's this:

• https://forums.developer.nvidia.com/t/gnome-gtk-application-tooltips-are-stretched-distorted/283775/12?u=tekstryder

Long story short, make sure you're either/both:

1. using the Vulkan renderer for GTK4 (you probably are under Gnome)
2. using the new egl-wayland2 library, which fixes those issues in the GL renderer.

[JaanDev]

yes, i have an nvidia gpu. so basically i just need to install egl-wayland2 from github? won't it break anything? or should i better wait for a fix on nvidia side? thanks for your reply!

[tekstryder]

I packaged egl-wayland2 and have been using for almost 2 months. No issue.

It will eventually be released and distro-packaged.

wait for a fix on nvidia side

That IS the fix on the nVidia side.

But, why not just use the vulkan renderer in your hyprland environment?

As a quick test...

GSK_RENDERER=vulkan gnome-calculator

...see if the distortions are gone.

[JaanDev]

woah, thank you so much! using vulkan removes all the issues (instead of using opengl for example)

maybe this should be mentioned in hyprland docs?

[tekstryder]

Vulkan is the default backend for GTK4 since 4.16.x series.

You are likely setting GL/NGL in your environment somewhere.

[JaanDev]

maybe you're right because it was indeed being used, but there is nothing about it in my hyprland config. well, thanks for help again!

[tekstryder]

Well try to find out where it's being set.

/etc/environment
~/.bash_profile
~/.bashrc

...are all possible. If you can't find it, you can simply add the GSK_RENDERER=vulkan to /etc/environment.

maybe this should be mentioned in hyprland docs?

This isn't specific to hyprland, but nVidia+GTK4 rather.