Random bends not working

Since upgrading to MuseScore 4.3.2 and downloading the new guitar sounds pack I've been having a lot of fun transcribing some of my favourite songs. Sadly, I've been running into an annoying issue where some of the bends I have used do not take effect. I can only assume this is an issue with playback on certain bars, because if I cut and paste the bar's contents into the bar before and after the bend plays correctly. Random things seem to make certain bends work and not work, in particular changing the score's overall tempo can break and repair certain bends.

I've tried changing from the SC - Lead to LP - Lead and the same thing happens, so both sounds have the same issue. I've also thought about deleting the MuseSpampler.dll file and having MuseHub redownload it, but I think it's the most up-to-date version (0.6.3). I've also tried changing the buffer size in the I/O settings which doesn't seem to have made any difference.

I'd upload the scores, but as they are copyrighted songs I have no idea if that is acceptable or not.

One last thing to add is I am still yet to figure out how to get the tremolo bar effect in the guitar palette to work. I select the note and then click the tremolo icon but nothing happens, despite it being possible to edit its effects in the properties tab.

Thanks for reading!