Toad 10.1 - COMPARE DATA: I can't scroll horizontally in the ALL DIFFERENCES window

The horizontal slider is not there.

It appears to get that way when you rt-click and do a “reset
columns”. If you close the form and then re-open it, the scrollbar will
return.

I’m looking for a fix, but now you know the workaround.

Ok, this will be fixed next beta.