https://bugs.kde.org/show_bug.cgi?id=395865
--- Comment #4 from mickyrosenl...@tuta.io --- After further testing, I have found that the issue is probably related to the black layer &/or rotoscoping. When I rotoscope something, the background that I have removed is not black - but white. Something is meddling with the black layer, so rotoscoping is not making parts outside the mask transparent. Realizing this was issue relating to the hidden "black" layer, I decided to use a composite transition below and above the clip, with both on track "Black" and to my surprise, rotoscoping one clip on another clip worked. However, whenever I put the colour clip as the background (lower clip), the background was still white, not green. So there is some problem with colour clips. P.S. Sorry for spamming a lot of messages I should have only done 1, but I am new to this forum and didn't realize. I'll make sure I won't do that next time -- You are receiving this mail because: You are watching all bug changes.