The frontfacing camera has a lot of delay (about a second), I don’t remember it being that slow in previous versions (maybe I misremember though).
Otherwise the latest main with automatic seems to work decently.
But for recording to work I had to manually install dcraw, imagemagick and ffmpeg. After that it worked, but felt a bit unreliable. Before I installed the dependencies, it just silently failed (looked like it succeeded, but there was no file, so I retried when running with the console open and found the errors). After installing the dependencies, once the conversion was done it just crashed right after it finished with a glib assert. But the video is playable in vlc!
Would be nicer if it used mkv instead of mp4 though, mp4 is so hard to work with since the standard is heavily patented so its very expensive to buy the documents for it. Matroska on the other hand has completely open documentation. Its just a shame that mp4 has won the “container” race 
(sm.puri.Millipixels:204981): GLib-GObject-CRITICAL **: 21:36:29.178: g_object_ref: assertion 'G_IS_OBJECT (object)' failed