The battery thing seems to only affect phones that are being stored and not used from what I have read. Actively used phones aren't having that issue. Not that it's acceptable either way. But most people aren't gonna experience this luckily.
Thank you for your feedback.
If you encounter any issues while using the Beta SW, please update Samsung Members app to latest version from the Galaxy store and send us an error report immediately after experiencing the issue from the Samsung member’s app -> Beta Feedback -> Error Reports to help us debug the issue.
We apologize for the inconvenience and appreciate your contribution to the beta program.
One UI Beta Team