OS: Linux Mint 18.1
Shotcut crashes with filter “Abgehackt”, if there is an image or a video with transparent part  in a track over that image or video (with that filter):
 Also if e.g. a video is full size (in my case 1920 * 1080) and you then use 'Rot/Scale" filter and decrease size.
If the part with filter “Abgehackt” is above all is fine: