I was using an edit with 16 trks of audio 3 Vid 2 Fx.
I was trying to make the timeline to fit full screen on the left hand monitor.
The picture was on the right.
I imported an AAF file.

If I grad the timeline from the bottom it is OK.
But trying to drag it from the top it has a mind of it's own.
I have never seen this before.

I had a similar situation today. Mine was related to the viewer. No matter what I clicked on, the viewer would jump to the cursor.

These kind of things are not odd to me. Other programs exhibit odd behavior at times. My computer is just barely capable for programs like lwks. I perform maintenance tasks quite frequently to try and forestall these kind of problems. I also run the resource monitor constantly in W7 to view cpu operations.

I'm not saying that's an answer for you, it's what happens on my machine.