Rooting from the live fs of a sealed volume is not allowed on a RELEASE build with Big Sur 11.2.2 and OC 0.6.7

Yesterday evening I decided to rebuild my system with OC 0.6.7 (sometime later I tried with 0.6.6) and Big Sur 11.2.2.

Now I get the error "Rooting from the live fs of a sealed volume is not allowed on a RELEASE build" during the installation. Google and OpenCore report this error, but claim that the problem has been fixed with OC 0.6.4 and newer. I can't find anything more on this. Does anyone know, what could probably cause the issue? I downgraded from OC 0.6.7. to 0.6.6 but this also didnt solved the problem.

I'm using a Z390 Board and i9 9900k

submitted by /u/Prizrenaliii
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