This issue is related to the tag aware Ocelot version (branch: amake:tagAwareCnP-squash).
When the floating button is displayed and the Ocelot main frame is minimized, the floating button still stays on, floating over the window currently opened.
It would be great if the floating button dialog would be minimized and restored along with the Ocelot main frame.
Thanks for the report. I also note that on Windows the button does not disappear when switching to a different program. None of this is a problem on OS X.
I thought it would be trivial to fix, but the solution is eluding me for the moment.