GNOME Bugzilla – Bug 749343
Horizontal scroll causes vertical scrolling
Last modified: 2016-05-05 14:47:01 UTC
To reproduce: 1) Select a line near the end of the screen but with more lines below it 2) Go to end of line 3) Hold down space 4) Watch as you somehow scroll up (and to the right, but that is expected) Probably a weird floating point bug ide_source_view_scroll_to_iter() as it is trying to deal with visible_rect and scroll offset.
This seems to have been fixed. Reopen if you can reproduce, but my quick testing showed otherwise. I think it was fixed as part of the viewport cleanup (where we maintain a smaller visible area than say, textview).