Zwift Hub compatibility with 12spd SRAM X01 Eagle AXS

I have installed a XG-1275 10-50t 12spd cassette on my Zwift Hub - and am running a SRAM X01 Eagle AXS groupset on my Ibis Hakka MX. Result is a clearly mis-aligned cassette, skipping at each gear as I down-shift. Is there a spacer that is required for this setup to ensure the proper alignment?

Note: I pulled my existing cassette off the Hakka, installed that one as well, and had the same result. And both cassettes work just fine if I install them on Hakka and go out for a spin.