[Linux] Segfault / Core dump in libwebkit2gtk when clicking on downloaded modpack

[thianovanwassenhove-design]

Please confirm the following.

• I checked the existing issues for duplicate problems
• I have tried resolving the issue using the support portal
• I have ensured my Modrinth App installation is up to date

What version of the Modrinth App are you using?

0.13.17

What operating systems are you seeing the problem on?

Linux

Describe the bug

When using the Modrinth App on Linux with an NVIDIA GPU and Wayland, the launcher opens fine and allows launching Minecraft directly from the Library view. However, the moment I click on a downloaded modpack to view its content or update page, the entire application immediately segfaults. In my case, this crash is so severe that it kills the GNOME/Wayland session entirely, crashing the DE and throwing me back to the GDM login screen.

This happens on both the native Nixpkgs version and the Flathub Flatpak version.

Steps to reproduce

1. Open the Modrinth App (Library view opens by default).
2. Click on any downloaded modpack to open its dedicated info/content page.
3. The app instantly crashes with a segmentation fault, freezing or crashing the entire GNOME desktop session.

Expected behavior

The modpack content page should load normally, showing the mod list, updates, and options without crashing the webview or crashing the desktop environment.

Additional context

System Environment:

• OS: NixOS 26.05 (Unstable channel)
• DE: GNOME 50 (Wayland)
• GPU: NVIDIA GeForce RTX 5060 Ti
• Driver: Proprietary NVIDIA Driver

Here is the exact core dump log extracted from journalctl right after the crash occurs, showing the crash happening deep within libwebkit2gtk-4.1.so:

jun 06 21:07:50 thiano-desktop systemd-coredump[8637]: Process 7774 (modrinth-app-wr) of user 1000 dumped core.
Module /usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.1.so.0.21.8 without build-id.
Module /usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.1.so.0.21.8
#0 0x00007ed765fd46f2 n/a (/usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.1.so.0.21.8 + 0xfd46f2)
#1 0x00007ed765e2cdbb n/a (/usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.1.so.0.21.8 + 0xe2cdbb)
#2 0x00007ed765f61e2f n/a (/usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.1.so.0.21.8 + 0xf61e2f)
#3 0x00007ed765840a25 n/a (/usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.1.so.0.21.8 + 0x840a25)
#4 0x00007ed765d33d19 n/a (/usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.1.so.0.21.8 + 0xd33d19)
#5 0x00007ed765e89dac n/a (/usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.1.so.0.21.8 + 0xe89dac)
#6 0x00007ed76588100f n/a (/usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.1.so.0.21.8 + 0x88100f)
#7 0x00007ed765d2aeb2 n/a (/usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.1.so.0.21.8 + 0xd2aeb2)
#8 0x00007ed765d2b168 n/a (/usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.1.so.0.21.8 + 0xd2b168)
#9 0x00007ed765d2b7d8 n/a (/usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.1.so.0.21.8 + 0xd2b7d8)