cannot leave slideshow view with ESC key
The ESC key is now used to leave fullscreen mode and it no longer works to get out of the slideshow view - differently from what is stated in the manual and in the refcard. In fact almost any key can leave the slideshow except of the ESC key.
We should now either change the documentation or the behavior of ESC. Personally I regard current the behavior as a bit uncommon as I would regard ESC as the "natural" choice out of a slideshow.