Steps to reproduce:
- Open a new game in ChessX.
- Play 1.e4 e5
- Press the left arrow key to go back to the position after 1.e4.
- Play 1...c5, starting a new variation.
- Comment the move 1...c5 with "Test comment".
- Delete the variation.
7a. Play 1...c5 again. The comment reappears.
7b. Instead you can also play another move like 1...c6. The comment still reappears.
Deleting a variation deletes all associated comments.