Someone kindly let me know if i'm doing something wrong or if this is a bug... This is
5.17 [knew that looked wrong] on Win 8.1 64. You can see that I've inserted a time signature marker in the tempo track that makes a new tempo and time signature of 6/8. As soon as i try to change the beat pattern in the metronome to something else, it instantly reverts the marker (and the project, as a result) to 4/4:
Attached is the demo project used to make the gif.
Clue me in if i'm missing something. :-)