battery service recommended after big sur
MBPro 2019 13' with 239 cycle. Yesterday I used my machine unplugged (first time after upgrading to igSur), and today I noticed that the battery icon changed. It says `service recommended`. I tried the PRAM reset, and run diagnostics as I read in other threads these could help/give more info. Diagnostic says everything is ok. PRAM reset had no effect (it reseted my brightness so I think it worked).
Can sb tell me if this is a bug, or my battery really need service? I didn't noticed any battery time drops.
MacBook Pro 13″, macOS 11.0