Patch 9 certainly led to many reports of oversensitive NPCs, including some that will turn hostile for totally unclear reasons but also more challenges from citizens acting as “guards”. It’s something I’ve noticed and reported as a bug myself.
I’m fairly sure that the Timmask laugh track getting stuck on has been reported here before, too, though not 100% on that.
Hopefully both will be addressed in the full release in August. You can, if you wish and can be bothered, submit a
bug report to Larian. They’ve not asked us to stop doing so! But on the other hand the version of the game they’re now working on will be very different from the patch 9 we’re still playing and presumably will have gone through many more stages of internal testing, so it’s your call.