Hi Krobert. I suggest checking out the side-by-side comparison of Samsung Galaxy S20 FE and OnePlus Nord as well as their reviews.
As for the issues, OnePlus Nord has tint issues while Samsung Galaxy S20 FE has display touch issues. It's hardware lottery anyway.
Personally, I'd go for Samsung Galaxy S20 FE for the bigger battery, wireless charging, and Super AMOLED display.