OK, I found out what the problem was.

DAW mode was left on in BIAB. Turned DAW mode off and everything is back to normal.

That maybe something to look at improving in the future.
Stay on top almost needs to be "on" when using DAW mode, but if you forget DAW mode "on" and go back to standalone, it can be confusing.

Should the options window of DAW mode include a "reset" on program shutdown; at least the "stay on Top" part?

Thanks for the replies, it got me through this.

Dan