Problem
This is behaviour I have been noticing for quite a while on Biology.SE.
Consider this user who after 42 days on the site posted two answers for the first time this morning. Yet neither one of them arrived in the "First Answer" section of the review tools. Neither post had received any upvotes, and I was careful not to load them in normal question view before going to the review pages.
I can only assume that this is:
Because the user has been registered for an extended period of time - though I'm sure this shouldn't exclude them from the review queue*- More likely because the user has not got 1 rep as they have received the association bonus from Stack Overflow.
If it is the second case then I would be inclined to argue that the association bonus should not exempt you from the review queue on another site, for example the on/off topic distinctions for Biology or another science site are likely to be hugely different from those on Stack Overflow - therefore it might be helpful to have more established users check it over.
Is this normal behaviour?
* This has happened twice more today with new users so it's not related to lurkers.
Feature Request
Include users with 101 reputation in the first post review screens in addition to those with 1 reputation to account for users new to a specific stack.
I'm now turning this into a feature request as I've noticed quite often that I'm editing posts by 101 rep users when I find them (for example, using DOI links which are in less common use on non-science stacks) - it would be nice to have these plumped in with the rest of the first questions rather than being surprised by them when I'm in a learning mood rather than an editing one!