As Mojave is in beta right now, I don't think Apple feels obligated to rush out a Supplemental update like they did for their production OS. Also not sure how they would have already patched in Mojave if they hadn't had it fixed in HS when the hardware was released.
I expect the next Mojave beta release to resolve this, but don't expect the next release to come faster due to this bug.
I expect the next Mojave beta release to resolve this, but don't expect the next release to come faster due to this bug.