So beta branch is their development branch. But who is doing the testing and where? If they have automated testing, the coverage sucks and they need better regression testing and to ideally follow test driven development where they add tests for every bug they fix.

Do you want to run on beta to see if they fixed some issue you have, but they broke something else that’s not broken on mainline? I’ve been there, done that. The reason there’s so many fixes lately is because they’re gearing up for Deckard release. I see no evidence that their development and testing practices have changed, and they need to or we’ll be right back where we were for the last several years of minor update breaking something major and not fixing it for months/ years.