Annoying MT4 Problem

I use MT4 through ATC FX Pro, and am getting bugged by a slight anomaly.

I usually have 9 charts open. On 6 of the charts, I can 'drag' the chart content vertically(I mean the whole chart- not stretching via the sidebar), but on 3 of them I cannot.

Not major, but a bit of a bug.

Any ideas anybody?

try pressing F8, then the 'Common' tab, check the scale (bottom left). should be different settings between the 6 and the 3. try the settings on the set-up you dont like to the set up you do like...?

Brilliant!
Thanks for that.