This question is an exact duplicate of:
When there are many suggested edits in the queue, a random selection of them is shown.
This is more annoying than useful, but there's a case when it's especially annoying: if someone edits both a tag wiki and the corresponding excerpt, the two are not shown together to reviewers. This leads to extra reviewing effort.
Please ensure that suggested edits to a tag wiki and the corresponding excerpt are always shown together. (Keep allowing different decisions, of course.)
I guess this feature request won't be implemented until the new community tasks UI comes out, but please do make sure it's done there.