If you used the crop function in FCPX that is accessed by the button under the record viewer, then it won't work as expected. That function is unique to FCPX, it crops and scales in one operation purely for convenience. Cropping in all other NLEs will crop without scaling. FCPX also has conventional crop controls in the Inspector panel. For XML compatability, use resizing, not crop.
Resolve 20.0 Mac OSX 15.5 Sequoia, Monitor 3G, FSI SDI grading monitor. Mac M1 Studio Max 32GB