A bug I seem to have is not being able to read registration applications. I have it on the latest fdroid (82.7-fdroid) and main (83.2). I get an error 400 Bad request. It seems to have been lingering for the past week or two.
I still get this on 1.84 fdroid and 1.84. Sorry for replying so late, I was so tired when I first read your message that I forgot to hit reply.