Garmin instinct solar 87 days remaining

Dear Owners,

did it happen to any of you that the battery remaining days shows above 62 days?

I have been charging the watch on the sun for the last 3 days and now it shows 87days of remaining charge

with the battery even not being full.

The truth is that I disabled everything I could except the watch face refresh every second.

Is this possible or is this only a software error?