All scrollers get sticky - and I need to reboot!

[Hall]

Every now and then, all the scrollers of any application suddenly become
sticky.

That is, if I try to drag the scroller down or click below it, instead of
paging or scrolling downwards in the window, the scroller jumps back to the
top and I just cannot see what's below the current visible area!

I'm not even able to key down. As soon as I reach the bottom of the visible
area, I'm not able to move my cursor downwards any further.

Is this a known bug??

 

[T. Waters]

Every now and then, all the scrollers of any application suddenly
become sticky.

That is, if I try to drag the scroller down or click below it,
instead of paging or scrolling downwards in the window, the scroller
jumps back to the top and I just cannot see what's below the current
visible area!

I'm not even able to key down. As soon as I reach the bottom of the
visible area, I'm not able to move my cursor downwards any further.

Is this a known bug??

This is probably a hardware problem with your mousing device.
Try a different mouse for a while and see it it corrects the situation.
Or open and inspect your mouse for dirt and sticking buttons.