The two formats I shot were Intra-frame 59.94p 600 Mbps and 23.98 240 Mbps. Both didn't work form me either. I just sent feedback via the FCP menu "Provide Final Cut Feedback". Might be helpful if you could too so we can get this fixed asap.
It's a new camera so this is my first time shooting this specific format. I shot H.264/Long GOP 108Mbps previously and that imported without issue. The files are exact and they open in Premiere, Canon Utility, Adobe Media Encoder.
