AFAICS it's not a timing issue, but a result of 'ENV{ID_FS_TYPE}=="lvm*|LVM*"'. /dev/md* does not have FS_TYPE "lvm*". So just remove that part from the 85-lvm2.rules file and everything should work fine.
AFAICS it's not a timing issue, but a result of 'ENV{ID_ FS_TYPE} =="lvm* |LVM*"' . /dev/md* does not have FS_TYPE "lvm*". So just remove that part from the 85-lvm2.rules file and everything should work fine.