if you have your sketchup window set to full screen, after opening it in non-full screen mode and having rolled over a vertex with the move tool to display a tooltip, then, in full screen mode, when you do the same action (roll over a point using the move tool to show a tool tip) it will move back t…

Bug with Full screen mode and tooltips in OSX

slbaumgartner January 27, 2016, 3:10pm 2

There have been several reports of this sort of problem. See, for example this thread: