Thanks for all the answers, at Christmass yet!
I guess it's a toss up whether it's a bug or not.
Sheri has explained how the Vertical scrollbar came to be. However, I'm used to seeing scrollbars disappear when not required by the window content.
Yes, it's a nuissance! But at least now I know what happened.
> P.S: What kind of people are we? It is the afternoon and evening of
> Christmas Eve and we are thinking about programming and clips. I hope
> you enjoy it as much as I do.
Hmm, my wife calls it an obsession.
Happy Holidays, Y'all.