I've been scouring the internet looking for a solution to this problem, with most places telling me just to get different software. 

The problem I'm having is the tail end of clips showing up in the final video that don't show up in editing. Example, I have  3 second clip that when I scroll through on the viewer is perfect, then in the preview is perfect, then I save it to a video and bam, a 0.05 sec chunk of unwanted material is attached at the end. This is annoying when trying to repeat the same clip to look like one longer clip, only to have flashes of another image interrupt the sequence. 

I've tried cutting out sections bit by bit by 0.03 second chunks (the shortest WMM seems to be able to focus on) but they always show up. I've tried publishing the video clip by itself, then loading it and cutting it again as an original video, but these hidden parts always show up!! Please help, I have no idea what is going on.