I flashed the 0612 builed as following steps.
1.flash c25 vendor,
2. flash LOS....0612+GAPPS+Magsik 20.3
It works.
Btw, This ROM need not vmbeta.img and volte_fix patcher.
I compared Gcam v7.2 and stock camera app,Gcam is better.
---------- Post added at 05:08 PM ---------- Previous post was at 05:07 PM ----------
need no vbmeta
Yes, I happed to this problem too, even face unlock works before with linageos15.1+open gapps nano version ,but now I must use PixelExperience_natrium-8.1.0-20180810-2116-OFFICIAL or Lineageos 16 to use face unlock.