* Vertical orientations often seem overlooked, specifically, the unity top bar is drawn over top of full-screen windows on the lower display. (This hides all the tabs in chrome, for example.)
* Windows show up in wildly unpredictable locations when adding/removing monitors. (often spanning across screens, or completely inaccessible.)
Adding to Andreic's comment:
* Vertical orientations often seem overlooked, specifically, the unity top bar is drawn over top of full-screen windows on the lower display. (This hides all the tabs in chrome, for example.)
* Windows show up in wildly unpredictable locations when adding/removing monitors. (often spanning across screens, or completely inaccessible.)