Palm Mute does not stay put
Create a score with a guitar tab.
Add text to indicate Palm Mute on some measures of the TAB.
Select the PM text and press X to relocate it to a position above the TAB.
Save the score.
Reopen the score and the PM text has returned to its original position below the TAB.
The same it true of Let It Ring text.
The V indicating a Tremolo Bar also does not stay in a repositioned state and sometimes overlaps the note to which it is attached.