I downloaded 4.4.7 using Snap on my RPi 500. The file open dialog doesn’t work, however I can create new code using the text editor, drop into the sketchbook and open it with Processing from there. Also the video library runs but still shows an error
“Video Library for Processing 4 does not run on this architecture: linux-aarch64
We could not find a system-wide or bundled installation of GStreamer, but video might still work if GStreamer was placed somewhere else.”