In early January, I started having insane charging issues with my Airpods Pro. The case wouldn't seem to hold a charge. It could be fully charged one minute, then I'd take an Airpod out and suddenly the case was at 0%, then I'd plug it in for 2 minutes and it'd jump back up to like 70%. Meanwhile I could never get the Airpods themselves up to 100% charge. They were hopping around from number to number seemingly without any relation to my charging of them.
After reading about the pulled 2C firmware, I looked and that indeed was what I was on. I went to the Apple Store and the employee basically looked at me like I was a nut, and tried to run a test on the battery which didn't turn anything up. He had me running a cycle of unpairing, forgetting, rebooting, etc. I told him about what I'd read and he brushed that off as rumors.
After a few minutes he said "Well I'm going to go ahead and give you a new pair. You're getting lucky because we're super busy today and it'll be easier to just let you have a new one than to keep messing with these."
The new pair he gave me is still on 2B588, and the charging and battery are behaving rationally.
All that said, I've had lag on the Pro's (on all firmwares) that I never had with the original-generation Airpods. When I push play, skip, or change the speed (on a podcast), there is often (but not EVERY time) 5-10 seconds of silence before the audio will kick back in. I mentioned that to the Genius and he blamed iOS for that, said the current version is buggy with Airpods (but still, it doesn't happen with my original Airpods, only the Pros). Anyone else have this particular issue? It plagued both my first and current set of Pros.