Is it reproducible? Does it always happen with the same session, plug-ins, and notes? If so, and if it’s a Studio Pro bug rather than a plug-in issue, please report it here in the forum (as a separate thread). In that case, it can most likely be ironed out easily.
You’ve seen the long list of bug fixes in this maintenance update. At the same time, the update was released extremely quickly (after two weeks instead of the usual 4-6 weeks for maintenance updates). Due to issues such as the automation rendering problem, there was a certain urgency. It’s therefore obvious that not all issues could be addressed yet.
The mute behavior - while I agree that it can be confusing - is clearly not a showstopper in my view, such as a crash or an issue with audible impact. That said, there will certainly be further updates on this topic. It just wasn’t addressed in this update.