MS4 opened MS3 file (.mscx) Measure stretched behind next measure

MuseScore 4 Upgrade Issues:
musescore 3 version 3.6.2.548021803, Revision 3224f34
musescore 4 version 4.0.0.223472200, Revision 5485621

I opened (File->Open, not imported) Suite1.mscz, which was created with musescore 3, in musescore 4. I noticed the following issues:

Mvt 1 - Rifts: Page 19, Measure 66 stretched (I was able to delete all notes in measure 66 and re-enter them manually to fix this issue)
Page 11, measures 40 & 41 playback in concert snare drum - loses the snare and becomes a tom
Mvt 2 - Rag: Page 33, Measure 35 stretched (same solution as measure 66 in mvt 1)
Page 44, measures 76 - 79 playback souhds like strings and woodwinds are playing with brass. This may not be an issue.
Mvt 3 - Reverie: Page 50, Measures 25 & 26 - Double sharps when in concert pitch (also in MuseScore 3)

Note: the measures beyone measure 32 in mvt 4 are empty in both versions and is not an issue. Also, all measures in mvt 4 "Espania" are empty in both versions and is not an issue.