When the Bulette appears, the game usually puts you into turn-based mode. Do you have the option to end your current turn, which should move things along? (If that's it, I think it's to give any of your characters not knocked down the opportunity to position themselves before battle starts, which is good. But it confused me the first time I came across it and I do think the game should make it clearer what's happening. )
I just reloaded the save before this happened, and yes you are right in thinking I can end the turn before the next round where everyone in the party now gets the opportunity to have a poke at the Bulette .. But also yes its confusing that we seem to be left in a position that has no enemy to target, and a main character downed.
In terms of the general quality of patch 9, as is usual with software some bugs have been fixed but adding new features introduces new ones. I think it's ... shall we say, uncharitable ... to assume that Larian's QA team are not doing their job properly rather than that they have done the best job possible given the time and resources they've had available. Given it's early access, I think it entirely reasonable for Larian to prioritise getting new features to players for comment and feedback as early as possible over making sure everything works perfectly. And because this is planned to be the last major patch, any additional resources spent on QA for EA would surely have a knock on impact on the release date or quality of the full release, and as long as Larian hotfix any showstopper bugs, I personally am perfectly okay with them focusing on achieving the August release date.
Thats .. an entirely more reasonable set of assumptions than I had after drinking a New Years bottle of Kraken rum

I think I was a bit unfair, and maybe should put the keyboard away until sober.
Thanks The_Red_Queen for your fair assessment.
Happy New Year to all.