GTK4/libadwaita layout broken on KDE Wayland; rows are tiny, text squashed
Context
I am running KDE Wayland on Arch Linux. I installed Errands via Flatpak and the layout was broken. The same thing occurs with the Done Flatpak package. If I use the Errands AUR package which builds the program from source, the issue is not present.
I reported the issue on Errand's issue tracker first, but it appeared to be a problem with Flatpak itself. So I reported the issue to Flatpak's issue tracker, and was directed to Freedesktop SDK's issue tracker. I was then directed here.
Description
As you can see in this image, the layout for Errands is broken:
The image is broken, and the rows are tiny.
This is what the program looks like when built from the AUR package, relying on my system libraries: