That's not a suggested edit thing, that's a tag order thing
Main meta Q on this: Diff shows tag being added and removed in the same revision
The answer to which explains:
The tagging system automatically sorts tags based on how many times they're used. However, this is relatively new, so when a new edit is processed for an old post, the system sees the sort ...
See here: New onboarding for review queues
From the question:
We are also showing a popover to users who earned access to review queues in the past, but have never done a review or haven't reviewed in the last 30 days. This popover is only appearing for the next 90 days. The goal is to engage users who may not have interacted with the queues since we made ...