I’ve been having the same exact problem.
after reading around and tinkering i kinda figured it out.
this is a little more of a temporary fix but it’ll do.
so my video has all the options in the sequence settings. (sequence>settings)
the ones that FCP picks for you are i guess the way the video is naturally because it dosent have to render the film. I realized after awhile that if i can change any sort of options on the film so it always has to render then it dosent skip!
so i had to change the codec from
H.264 to XDCAM(720p 30f)
obvisouly the codec i changed it to will be different depending on preferences and what type of recording gear and settings you have.(my camera is 720p and 30 FPS) so it’s a little bit of a pain to render EVERYTHING, but its much better than not even being able to see what your doing.
if anyone has a fix for this that involves not having to render ALL video, please let me know as it would be a little bit of a time saver.
thanks.