Battery % dropping while no power draw

I have an 8.2kWH battery that was installed at the end of October, I've been keeping an eye on it now that there's been a bit of consistent sun to get it charged up as it has lost some capacity and I think it likely needs to be recalibrated but in doing so I've noticed that after charging to 100% it will discharge for a short while until it reaches 98% but then will over time drop to around 95% with no apparent draw from the battery. At this point if the sun is still out it generally starts charging again, but before I go to my installer I wanted to know if this was usual behaviour?

AndrewWagner Yes. If you read the beta testing conversation, this is a much-discussed topic, along with all the others. If you aren't on a beta firmware version, then try searching the forum for whichever your inverter is as someone else will likely also be seeing this.