Yes, just flash magisk. No issues there.This recovery installs OK for me on my CN phone converted to WW rom, but if I use the TWRP "Root Phone" option in Advanced to root and install Magisk, it disables the Wifi, and after rebooting the phone it goes into a bootloop that I can't recover from (not even restoring from TWRP backup) and I have to reflash WW rom to recover. I repeated this refleash/reroot process 3 or 4 times and it happened every time with breaking wifi and then reboot failing.
So it works, but I wouldn't use the built-in rooting yet until it is ironed out.