Normally when I select an object in the Unity Hierarchy, the Playmaker editor window updates to show the FSM on the selected object. This is now breaking so it just gets stuck on the current FSM after a few minutes of opening Unity. It's as if "Lock" is selected, but it's not. If I close the docked Playmaker editor and reopen it, it behaves normally for a few minutes then gets stuck again. When it's stuck, the only way I can access an object's FSM is by clicking "Edit" within the Playmaker component of an object.
I'm running Unity 5.3.5f1 and Playmaker 1.8.1.f10