Courtesy accidentals not quite working

Describe the bug

1. Courtesy accidentals without parentheses need to be removed before courtesy accidentals with parentheses will work.
2. Courtesy accidentals with parentheses need to be removed before courtesy accidentals without parentheses will work.

To Reproduce
Define three shortcuts:

• CTL-A: RunPluginAddCourtesyAccidentals
• OPT-A: RunPluginRemoveCourtesyAccidentals
• CTL-OPT-A: RunPluginConfigCourtesyAccidentals

(1) Do CTL-A.
Result: Courtesy accidentals are added correctly, without parentheses.

(2) Do CTL-OPT-A; Tick checkbox "Put accidentals in parenthesis"; Click "Add accidentals".
Result: No change.

Note: The same problem applies if (1) and (2) are reversed.

Expected behavior
After (2), the parentheses should be added.

CA Test again.mscz.zip

Screenshots

Platform information
MacOS 13.1
Macbook M1 Pro

Additional context
Add any other context about the problem here.

Start by reproducing the sequence with RunPluginAddCourtesyAccidentals, RunPluginRemoveCourtesyAccidentals, and RunPluginConfigCourtesyAccidentals using the attached CA Test again.mscz file. Compare adding accidentals with and without the “Put accidentals in parenthesis” checkbox after each order of operations. Done means both forms can be applied successively and the expected parentheses appear.