Comment # 1 on bug 1180408 from Josef Reidinger

Yeah, partitioning is obviously wrong as it creates boot partition for legacy
and not EFI partition as it should.

Ancor can you check why  it stop working?

Only suspicion thing I see is 

2020-12-25 15:54:07 <1> install(3175) [libstorage] Arch.cc(probe):127
arch:aarch64 ppc-mac:false ppc-pegasos:false ppc-power-nv:false efiboot:false
page-size:4096

so it probably does not detect EFI in libstorage?