AUTOSCROLL will not turn off: HELP!!

I've found the Autoscroll button in FLStudio 20 and toggling it doesn't not effect the program.
When in PLAYLIST mode, the program AUTOSCROLLS and I cannot stop it from happening.

I tried holding down the 0 (zero) button and letting go which seemed to work in FL 10.0
Nada?

I'm really going nuts.
It is NOT my mouse, not my keyboard; it only happens in FLStudio.

Can anyone help. I have to teach students tomorrow and the program is non-functional
with this happening.

Thanks, Rick Walker looppool@cruzio.com