Hitting Shift+F2 to toggle out of full screen grid view it is not working (4251129)

Hitting <Shift+F2> to toggle out of full screen grid view it is not working.

Test sequence:
Start Toad (you dont have to log into a DB)
open the editor (make sure it is in split screen format with both the data grid and the edit area displayed)
<shift>F2
close the editor window
open the editor
-- it opens in full screen data grid format
neither <shift>F2 or F2 will restore the split screen format

Here is a second test
open the editor (make sure it is in split screen format with both the data grid and the edit area displayed)
<shift>F2
open a second tab in the editor
-- it opens in full screen data grid format