I always get messed up videos if I don't select transcode but copy.
Here I get a blank screen, but sometimes there are glitches then a blank screen.
I swear it worked with this type of file before (I can't 100% confirm because it was months ago)
I have use the free software (based on ffmpeg) : VidCutter, to cut parts of ANY video file, in any containers, without re-encoding. But it doesn't fit into a "clean" workflow.
Here the video file if you want to test it (Resolve 17.1.1) :
https://www.swisstransfer.com/d/020d65ff-5842-4b69-b008-e73f37572999 (Note, it's a problem for all of these type of files not just this one)
Just drag and drop it in the timeline, make a quick edit with cuts (and delete some parts), then use the Media Management tool.
Resolve 17.1.1
Win10
RTX 3080 - 461.40 (studio drivers)
I couldn't attach more than 3 pictures so this one below should be at the bottom