Crash involving fermatas when opening a file

This score crashes the current 3.0 dev. : https://musescore.com/user/27057308/scores/5054350

But not there is two days with: 2c43063

• The crash occurs with the following nightly/commit, dealing with fermatas: cb6a5c9

Precisely, the crash is fixed by removing, last measure of the score, two fermatas, ie the one on top instrument (trumpet) and the other on piano, first staff.
See: fermatas.mscz

I cannot reproduce from scratch right now.