Reviews usually come in to the sites at around the same time. For FPs that is at the next multiple of 5 minute after the post was posted. However, since last night (~19:00 GMT) I have noticed that this doesn't seem to be happening anymore. For a recent example on SFF this question never went to the FP queue despite being eligible.
Has something changed with regards to the review job or is there a bug preventing normal procedures? And if something has changed, why? These sorts of reviews need to be handled as soon as possible.