Motion Tracker not tracking after analyzing

So I understand how motion tracking works and I run into this problem where occasionally i would analyze a video but the preview box would dissapear and nothing would be tracked. And when I used an image to load keyframes from it, the image just flings off screen. I’m not sure what causes it or how to fix it.

It does not always behave well if you change the speed of the clip

is there any way to fix this issue or get around it?

Just used the speeded up video as an mlt, I mean get the video into shotcut, speed it up or slow down, save mlt file. And open another project with mlt as a clip and use the speeded up mlt in that new project, then track. Only workaround I know of except exporting, because if the video is long, exporting could also take time.