Note entry mode after switching tabs (0.9.6 regression)

Steps to reproduce bug
1. Open two or more tabs in MuseScore
2. Press "N" to begin note entry mode
3. Click on another tab to switch to a different score. Notice that Note Entry Mode is still selected
4. Try to add a note to score

Expected behavior: Since MuseScore is no longer in note entry mode, switching tabs in step 3 should unselect the N" on the toolbar.

Actual behavior: "N" is still selected but MuseScore is no longer in note entry mode

MuseScore version: r. 2572 nightly. (Bug not present in 0.9.5)

(Operating System: Windows XP)