Beaming incorrect after time signature change

Additional information:

You can recreate this situation in a score created from scratch even with no parts. The key for me is the 5/4 time signature and the order of operations:

1) create new score in 4/4
2) measure 4, fill with eighth notes
3) add an explicit 4/4 time signature in front of measure 4
4) add 5/4 to measure 3
5) delete the 5/4 (this adds an additional measure, moving the eighth notes to measure 5, which I guess is normal)
6) now re-add the 5/4 to the new measure 4

Result: the beaming of the eighths changes from 4+4 to 6+2

I'm sure other variations of these steps will produce the problem and cannot say if the original example was created in anything like this manner, but interestingly, at step 6), it does have to be the newly inserted measure you add the 5/4 to.

I'm seeing the same effect even without 5/4 being involved - just 4/4 and 3/4:

1) new score, 4/4
2) fill three measures with eighths
3) drag 3/4 to bar 3
4) select measure 3
5) insert measure
6) add eighths to inserted measure

Result: beaming is 2+2+4
Expected result: beaming is 4+4

Fixed in 2f85f8e007

Automatically closed -- issue fixed for 2 weeks with no activity.