Now that I've installed Big Sur 11.1 on my 2017 Macbook air, I'm experiencing an issue when on battery power of my instantly shutting down. I cannot restart it unless I plug the AC power back in. I've noticed it seems to occur right at the 50% battery left mark. I removed a third party Sophis app after reading 3rd party apps may be the culprit on another forum. Still is happening. Seems to be a bug in Big Sur. Anyone experiencing this?