Hi, guys, i am new there. I work in KDEnlive and I get bug in render.
I made just cuts in KDEnlive then I tried to render it and after render my film don't have some cuts or have it, but in another places. In program all is correct - in preview too, but just after render i got bugs. I tried render preset H.264, next MP4 preset and all time i get the same effect.

Okay. Nevermind. I found this problem in know issues and i just reinstalled Kdenlive. Now all work fine. Topic to close.