Cannot use Two-Finger mousepad to right-click and paint

[kjlaw89]

Looks to be a limitation of GTK and ScrolledWindows. If you have a two-finger mousepad and try to two-finger right-click to paint with the secondary color the mouse will not move any. This appears to be more of a symptom than the actual problem, which is that the parent element (ScrolledWindow) is trying to scroll when there is nothing to scroll. If you have an image that's bigger than the window bounds and try to right-click it'll scroll around instead.

[kjlaw89]

This does work, but you need to actually 'click' on the touchpad - it's not enough to two-finger tap and drag. Apparently this is standard behavior amongst all of the image programs, so I'll mark it as a won't fix. There's likely not much I can do for this unfortunately.