[Bug]: Official AppImage 0.21.10 fails to launch on Ubuntu 24.04 / Linux Mint 22 due to GLIBC 2.43 requirement #8016

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?

0.21.10

What operating systems are you seeing the problem on?

Linux

Describe the bug

The official 0.21.10 AppImage fails to start on Ubuntu 24.04 LTS / Linux Mint 22 due to missing GLIBC symbols:

ModrinthApp: /lib/x86_64-linux-gnu/libc.so.6: version GLIBC_2.43' not found (required by /tmp/.mount_Modrin.../usr/lib/libglib-2.0.so.0) ModrinthApp: /lib/x86_64-linux-gnu/libm.so.6: version GLIBC_2.43' not found (required by /tmp/.mount_Modrin.../usr/lib/libwebkit2gtk-4.1.so.0)
ModrinthApp: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.42' not found (required by /tmp/.mount_Modrin.../usr/lib/libwebkit2gtk-4.1.so.0)

It seems the build runner packaged libraries linked against GLIBC 2.43 (Ubuntu 25.04?), making it incompatible with LTS distributions (Ubuntu 24.04 has GLIBC 2.39).

Steps to reproduce

1. Download Modrinth.App_0.21.10_amd64.AppImage on Ubuntu 24.04 or Linux Mint 22
2. Make it executable (chmod +x)
3. Run it from terminal or file manager
4. App fails to launch with GLIBC errors

Expected behavior

The AppImage should launch normally on current LTS distributions like Ubuntu 24.04 (as previous releases like 0.18.2 / 0.19.2 did).

Additional context

I compiled the app from source locally on Linux Mint 22 against system libraries and it launches fine. Building the release AppImage on an older base (like Ubuntu 22.04) would resolve this for LTS users.