Happening in 10.0.2; didn't know 10.0.3 was available.
In .02, it is intermittent, doesn’t matter where you click on the tab - it can move either way. Doesn’t seem to matter whether or not another operation is taking place. Happens a lot less than it did in 10.0 and 10,01, but still there.
I'll try 10.03 after installing it.