Display of information boxes
Overlays, comment boxes or similar are not (always) displayed properly when to close to the canvas end of the submap. Sometimes, the window interface is managed in a way that everything is visible, but sometimes the information box is cutted on the upper end, see for instance:
It is then possible to extend to window by for instance using the keyboard arrow keys, but I think the information box should be completely visible to a user when clicking on a entity.