I just did a scrolling capture of dopus with horizontal and vertical scrolling.
It doesnt work well with default settings (scrolling "by pages"), but once I do a "Test window...", settings are changed to "by rows" & it works absolutely perfectly without me having to adjust anything.
It's very impressive

Some comments/queries, mainly on options & interface (- I'm not loking for answers, just throwing ideas out)
1) "Rows" being better than "Pages" (as said above) makes me wonder should default scrolling be "by rows" ? (I know I'm basing this question on one capture, but just thought I'd ask anyways).
2)
~ if horizontal scrolling is activated when there is no horizontal scrolling in the window, it doesnt work
~ if horizontal scrolling is *not* activated where there *is* horizontal scrolling in the window, it doesnt work.
I think that initially this is not clear - I wonder could it be indicated in some more definite way? (one possible option could be to say:
if there's horizontal scrolling, please do a "Test Window..." as that seems to work well. Or
Please turn Horizontal scrolling on/off as appropriate. Or...
3) Not important I guess: I have no idea what "Capture until max below" means...
I think improved layout/display of options for the scrolling capture would be helpful -
wouldn't need any big changes, I dont think. Some suggestions:
4)
First window once scrolling capture selected:
a) maybe move [Test windows & guess Settings] above "Miscellaneous options"
b) Could VERTICAL and HORIZONTAL SCROLLING be emphasised more?
c) Could [OK begin scrolling...] be emaphasised more - made double height maybe? stronger icon maybe?
5)
Second Windowmove Steps 1 & 2 above the more detailed margins settings?