Glissando between grace note and parent is too long; and does not stretch or contract with score

OS: Windows 10 (10.0), Arch.: x86_64, MuseScore version (64-bit): 3.4.2.9788, revision: 148e43f

This issue is a carry-over from MS 2. Open the attached file:

1. Notice the grace note glissando in measure 2, and the ordinary note-to-note glissando in measure 4.
   
2. Note also that the grace note glissando in M2 is too long (which also puts the grace note too close to the preceding note).
3. Place a system break just after M4. Now compare the two glissandos again.
   
   Expected result: The grace note glissando should stretch with the score – just like the glissando in M4.
   Actual result: The grace note remains the same length. In fact even if you put a system break after M2, the grace note glissando remains the same length.