Do you have magisk installed and "magisk hide" set to on on settings?This is my first time using a custom ROM since before I got the OnePlus 5, I was kind of forced into it as I was having multiple major issues with stock OOS 188.8.131.52.
Anyway, the unlocking process and flashing was pretty painless following the tutorials and I'm having basically no issues with this ROM. It's a huge improvement over oxygen is.
The only setback so far is it looks like I have to relock my bootloader to get my google pay working. I have to do some more research to confirm this is the only solution and if I'll have to restore everything from scratch again.