This isn't a great problem, and may be intentional, but puzzling, nonetheless ...

I'm in:
Lights Out
Docking Mode
... but with the Canvas Positioner floating (quite happily).

Then when I re-start Artrage it docks the Canvas Positioner ... automatically ...

Not a great problem, I just undock the Canvas Positioner, but ...

One more point, ArtRage 5 is BRILLIANT ... well done, great job lads (oh, and lassies, too)

Pat