Time signature does not always update in score
OS: Windows 10 (10.0), Arch.: x86_64, MuseScore version (64-bit): 220.127.116.1182, revision: 2e2af50
Create a score using either 3/4 or 6/8 as the time signature
apply the other time signature to the first measure
Expected result: time signature changes, measure properties indicates the change in actual and nominal Measure durations and time signature properties (in the right click menu) update.
Actual result: time signature stays the same but measure properties are correct but time signature properties show the original time signature.
Additional notes: I have used not parts in any of the testing, so I know this is not a factor. I also tried it in page view and continuous view so that is not an issue. The workaround is to apply a different time signature before the one you want -12/8 works fine for this and does not create ties like 4/4 would. Also note, that 4/4 and equal length time signatures (C and cut) work fine. Creating a custom 3/4 time signature had the same results. The strangest thing in my mind is that the beaming is adjusted according to the new time signature in all tested cases.