Steps to reproduce this issue:

1. Select the GameObject in the scene "TestScene"
2. Lock the inspector
3. Deslect the GameObject (you should now keep the GameObject deselected for the rest of the steps to reproduce this bug)
4. Press Play to run the scene
5. Press Play again to edit the scene
6. Change the value "count" in the inspector with it still deselected
7. Press Play to play the scene (the value should be whatever you changed it to)
8. Press Play again to go back to edit mode
9. The value is now reverted but it should have kept the value you inputed previously in edit mode

If Inspector is not locked everything works as expected