Incorrect export of MusicXML format

[Dima-S-Jr]

Issue type

Import/export issue

Bug description

Instead of a thousand words: I attached a file. This is a compressed folder. There are two files in this folder: mscz and MusicXML. I got the MusicXML file by exporting from the mscz file. After that, I imported the MusicXML file into Musescore 4 and saw that all the measures have been increased in duration by 3 times! Parts of the written notes were scattered over the measures. I assume that Musescore exports such errors due to the fact that in some random measure the notes of the first and second voices are absolutely identical. I tested this on another score with a similar problem.
Incorrectly exported MusicXML.zip

Moreover, some of the dynamic designations were written in the form of code text (circled in red in the screenshot)

Steps to reproduce

1. exported the file to MusicXML
2. opened the resulting MusicXML file in Musescore 4

Screenshots/Screen recordings

MuseScore Version

OS: Windows 10 Version 2009 or later, Arch.: x86_64, MuseScore version (64-bit): 4.1.1-232071203, revision: github-musescore-musescore-e4d1ddf

Regression

No

Operating system

Windows 11

[Jojo-Schmitz]

Mu3 has the same import issue. Or export issue...