Your comments

I've had the problem for years, but not for a while. I just got a new laptop, X1 Extreme G2, with Windows-10. It's back.  I Googled it and saw what I remember from the past. Lot's of people reporting the problem, but no solutions found.

I'll look at the Taskbar Resize code, thanks.  I gather from your response that you don't think it is appropriate addition to 7+TT.