Questions all around the network do not get Related Questions anymore, for several hours.
Examples from around the network:
This is not a duplicate of Why does the Related question list not always show up? since that explains the normal caching that causes them to not initially show up until a few minutes (or at most an hour) later; these examples are all a few hours old and the related questions still haven't shown up, so it's clearly a bug.
Can this please be fixed?