Comment 3 for bug 887414

Yep, aligning the tops of the displays in the display preferences fixes this. Apologies for the duplicate, does bug:735937 also address whether the adjacent corners of the displays should be mapped to each other?

In other words, in my mind, if I were to move the pointer off my external display near the top corner, it should appear on my laptop display near the top corner, likewise with the bottom. As it is, you can only move between screens on the adjacent edge for an area equal to the height of the smaller display, this seems unintuitive to me.