Hi, this is quite unimportant, I just want to mention it. When I load Dorico 4, there is a little white line on the bottom of the loading screen (Win 10, 4k monitor):
I get a white line along the right edge as well. Might be an interaction with Windows scaling.
Edit: I never noticed it.
It’s probably a screen artifact, as Craig said. My advice - ignore it and get on with your work.
it could be a visual “busy” indicator?