MGCB Editor 3.8.3 and newer completely broken on Arch Linux

Prerequisites

• I have verified this issue is present in the develop branch
• I have searched open and closed issues to ensure it has not already been reported.

MonoGame Version

3.8.3, 3.8.4

Which MonoGame platform are you using?

MonoGame Windows Desktop Application (mgwindowsdx)

Operating System

Arch Linux / Garuda Linux

Description

MGCB Editor is broken/unusable on Arch Linux and derivates. Primary issue is that no popups will open when choosing respective entries, making it impossible to add files.

Tested with both the VSCode plugin available through dotnet installer as well as completely building development branch from source, locally. There are also several reports in developments forms for different Arch linux derivates, all pointing to the same issue and errors being logged. Issue seems to be related to GTK.

Last known working version is 3.8.2.1105, previous version 3.8.1.303 is also working fine.

Steps to Reproduce

Run MGCB Editor 3.8.3 or newer on current version of Arch linux or derivate.

My tests were run on Garuda Linux Broadwing, Linux 6.14.10, KDE Plasma 6.3.5.

Minimal Example Repo

No response

Expected Behavior

Application starts without logging errors and popups show when they should.

Resulting Behavior

Application logs errors and popups don't show.

Files

No response