Just a nitpick, but when looking at the docs, I can't move with Page Up/Page Down unless I click in the "content column/area", kind of annoying when one navigates using the left bar and then can't move around (on no-mouse setups, e.g. trackpoint + keyboard). So you might want to look at that.

Otherwise no issues (older laptop i5/chrome), so I guess you guys mostly fixed that by now.