Color grades are brighter from one to another Resolve Versio

Hi, I've graded in DaVinci Resolve Studio 17.0b6 in ACES using Sony S-Log IDT.
After upgrading to a higher DaVinci Resolve Version like 17.0b9 my whole colour grades are brighter.
I didn't changed anything within the project and when going back to 17.0b6 everything is fine again.

Any hints, what have I missed?

I've not noticed this myself. Unfortunately, I can't think of anything that might cause that.