Hi Leukipp,
First, thanks again for that great application. I've noticed an annoying problem, when going out of fullscreen videos, whether it be a browser after having watched a full screen youtube video, or vlc after playing a video file.
When going out of fullscreen, the tiled window will always be too extended on the bottom, going lower than the bottom of the screen. If there were several tiled applications on the screen (say, a video player and a file manager), only the video player goes below the bottom of the screen (eg, with vlc and thunar, after vlc coming out of fullscreen, thunar is the right height, but not vlc).
Re-tiling with ctrl+maj+right, for instance, fixes the problem, but an out of fullscreen videoplayer should come back at the right height without having anything to do manually.
I've also noticed that I sometimes have to repeat asking for a video player to go fullscreen : for instance, I click on youtube's fullscreen button, it starts going fullscreen, then reverts back to normal, so I repeat the manipulation, sometimes two or three times before it will work. Don't know if it's related, though.