Changing time signature with septuplet/nonoplet and slurs results in crash

3.0.1/ Windows7

Steps:

1) Default score
2) Measure 2: enter a septuplet (or nonuplet) + a slur
3) Select measure1 : double-click eg 3/4 in time signature palette

Result: crash

• Test file (before adding slur): test slur tuplet.mscz

• Discovered by working around attachement in this thread:
  https://musescore.org/en/node/282055#comment-889248

• With the same scenario, I can't reproduce right now with other tuplets (triplet, quadruplet, quintuplet etc.)

See: