OS 10.14.4 When opening files, there's a blank window. The files have views already created and saved in views palette. Activating views does not change display. Only way to affect views is to Edit Cone of Vision (cmd+E) and then upon exiting, the view appears. Happens every time when opening files created in prior versions or created in V9, when closing and reopening. This is very annoying. Also when in Edit Cone of Vision, the display flickers when adjusting views. Anyone else experience similar problems?