Ok, I think I can get used to that, now that it isn't being grabbed by the mouse.  Having to go into move move first isn't really an issue, there was just no mention of PgUp/PgDn at all in the keyboard controls so I didn't know it was possible.  I do have one other issue with the Windows version. Tooltips will appear for a second, and then disappear, rapidly repeating like that. Rarely, they are stable, and there's no problems in the browser version, so not sure what's going on.