But I might be wrong about anaconda. It could be the new blscfg.
I was looking through my grub.cfg on fedora 30 and found “insmod fat.” I’ll have to double check in what context it said that, but presumably, grub, booted from a fat partition (ESP), does not need to open the fat partition. That was already done.
(Just to be clear, I’m not having this issue. (I upgraded, so that could be it?) I’m not blaming that line, I’m only saying that the new blscfg change likely has something to do with it, and that I take back my attribution of blame on anaconda (even though, ultimately, it still comes back to grub regardless).)