"Interval" sometimes missing from Trill property

While editing scores imported from Sibelius, I found that the “Interval” option for the trill is sometimes missing. I attach 2 screen captures, one with Interval, the other without:

This is just a report of a possible minor bug. I found the workaround, just select other trills or other items, then come back to this trill, the “Interval” option will appear.


This one’s been reported before, here