atomspec balloon blanks out fullscreen ChimeraX

[Elaine Meng]

Observed by at least 3 people on Mac laptops at the SLAC workshop 7/10/2019, and reproduced by me today (7/11) with current daily build on desktop Mac.

On Mac with ChimeraX in fullscreen mode (from clicking the green dot on the window) pausing over an atom long enough for balloon atomspec to show made the entire screen blank except for the balloon itself. Had to switch apps using Cmd-Tab switch for the rest of the ChimeraX window to reappear. Very annoying because it’s hard to avoid pausing over any atom for the short time it takes to show the balloon. Going out of fullscreen didn’t seem to solve the problem, instead only quitting Chimera and restarting and never going into fullscreen after that solved it, although the window could be enlarged to basically fill the whole screen without the problem reappearing.

[Tom Goddard]

Fixed.

Change a few weeks ago #2140 to fix vanishing balloons on Mac caused balloons in full-screen not to work. Reverted that change.