I can somewhat understand why they decided to do the total rewrite, but to my mind it still suffers from all the things described in Spolsky's "Things-You-Should-Never-Do": A standstill on the old version for a very long time (actually that already preceeded the rewrite somwhat, though the latter certainly didn't help in that regard), lots of missing features in the new version (each of which might – mostly – only be a small feature when viewed individually, but taken together it's still a noticeable bit that's currently missing), and of course a number of bugs introduced through the rewrite that need to be ironed out once again (occasionally quite literally "once again").

I liked FFP's main UI, but that was it.

Major websites wouldn't work properly (Twitter) and sharing images directly from a website (memes are my bread and butter) also didn't work.

I use Chrome with NextDNS on Android.

I have no issues with those things on preview now. It has been a tiny bit unstable but it's getting better