Fractal 9 was released recently. The release notes state among others:

We switched to the glycin library (the same one used by GNOME Image Viewer) to load images, allowing us to fix several issues, like supporting more animated formats and SVGs and respecting EXIF orientation.

On my NixOS Gnome unstable now Fractal seems to be unable to display images at all. That is images posted into channels, images in the preview before posting them, plus user and room avatars (creenshot)

I wonder whether this is a NixOS or a Gnome or a Fractal problem and where I should file an issue about it. Can anyone in here tell? :)