Premiere 26.5.0 BETA Build 57 crashing when pasting attributes from another clip

I'm currently running macOS 27 Golden Gate Beta 3, and things have been really bad since updating.

First, I found out I had to run this command:

defaults write com.adobe.PremierePro "EnableFireflyFeatures" -bool NO

This fixed an issue where Premiere Pro would crash every time I placed anything on the timeline. After that, I discovered another bug: copying attributes from one clip to another causes the app to crash again. I haven't found a workaround for that one yet.

I know some of these issues may need to be fixed by Apple, but since the first problem was resolved by disabling Firefly features, it seems like at least some of the crashes could be Adobe-related.

At this point, Premiere Pro is extremely unstable on Golden Gate Beta 3, and I honestly don't know what to do. After Effects has also been crashing, even though I haven't changed anything besides updating the OS.