Undo toggling concert pitch does not apparently restore previous notes

Steps:
1- Open attached score;
2- Toggle concert pitch on;
3- Undo.
Expected:

Actual result:

Notes:
The notes are only apparently wrong (display updating problem?). They play with the correct pitch, and, if you select one note and use arrow-up arrow-down all the notes inside the measure containing this note become also visually correct (as in the expected output for that measure).

Windows 8.1, commit 9ff2640