Description

The Librefang desktop app currently does not open a functional window upon starting. When started librefang-desktop produces an blank white window. When started from terminal librefang-desktop does not produce any errors.

This behavior was reproduced with multiple configurations:

• AppImage build on computer running BluefinOS (based on Fedora SilverBlue 43, Gnome 49)
• AppImage build on NixOS 25.11 with KDE Plasma 6.5.5
• NixOS build on NixOS unstable (26.05) with Gnome 49 (see details below)

Similar problems can be tackled using different acceleration and rendering settings via environment variables. I tried to apply different settings of WEBKIT_USE_GL_STACK and GSK_RENDERER variables, but to no success.

On the NixOS I could not test the librefang desktop since the build is again failing due to the dlopen not finding libayatana-appindicator. This is presumably caused by recent commit that has removed libayatana-appindicator from desktopBuildInputs and the rpath fix which was proposed by @houko in PR #2974.
For this reason the librefang-desktop I tested had to be locally modified to build.

The AppImages were tested in three scenarios: start from command line, start from librefang-cli, start using Gearlever. In all cases the result is the same, blank window, see attached screenshot.

Expected Behavior

The Librefang desktop app is expected to produce a functional and readable window.

Steps to Reproduce

1. Run librefang-desktop (assuming the AppImage is installed)
2. Observe blank window.

LibreFang Version

v2026.4.23-beta4

Operating System

Linux (x86_64)

Logs / Screenshots

Blank window screenshot: