I am using GIMP 2.10.24 (Flatpak) on Ubuntu 18.04. I have been using the GMIC flatpak plugin with GIMP for many months.
After a recent flatpak update, the G’MIC plugin has stopped appearing in the GIMP Filters menu. No change made to GIMP config or any other disk configuration so I think the flatpak or OS update caused it, but I may be wrong.
I checked if the flatpak gmic plugin is installed using ‘flatpak search org.gimp.GIMP.Plugin’. It shows the gmic plugin is installed along with six other plugins like resynthesizer, liquid rescale etc. So my guess is that the folders list of GIMP preferences is not pointing to the right flatpak plugin folder causing the plugin to vanish from GIMP. So the question is where do flatpak GIMP plugins reside?
Also, there is a (new??) column listed by flatpak showing ‘branch’ (2-3.36 / 2-40) for each plugin installed. What does it indicate ?