Life P3: won't connect after long charging session

After having charged the buds over night, they won’t connect to my phone when opening the charging case. I’ll have to press the pairing button for the buds to connect to the phone again.
Is this working as intended? Someone else having the same issue?

I would do a reset of the buds and delete them from the phone
Then start a new connection and hope all will work again as supposed.