Strange things in editing

Hi guys, I have a timeline with 5 shots in various angle, as you can see in the video attached, every clip I move while editing, I see only the clip above. It seems all clip the same, but is not so. have I changed wrongly some settings?
Many thanks

Whatever video track is at the top it will be displayed regardless of what is beneath it. Move up one of the tracks below to above it and you will see what I mean. You will be able to see your original video track until the new one starts. This is normal behaviour.

Thanks Charls, I can say that until yesterday, I could see the contents of the track by moving it with the cursor; which I usually did with other editors. I've been doing it for many years, and DaVinci did so too.

This I mean

Do you mean the 4 way trim screen? Or are you wanting to do multicam?

Sorry I'm not sure to understand, I don't change any setting, but is strange that I trim a clip and i see such triming the track above. I'm sure that yesterday was ok.

I show you what I need and what I had until DR14 beta version