'Straight' text does not work, since all options in the "Swing settings" tab are unchecked
To reproduce this issue:
1) Place the Swing text at the beginning of a piece.
2) Place the Straight text anywhere after.
3) Place repeating eighth notes in both sections
After the Swing text is placed, the rest of the piece will be swung, even if there is the Straight text.
Attached is a MuseScore file to show this problem.