When first connecting to a dedicated server, it sends the recipe list update packet followed by the tag list update packet.

After issuing a /reload or /datapack command, it sends the tag list update packet followed by the recipe list update packet.

This is inconsistent, and makes it hard for mods to reason about when the data from both will be available.

It seems logical to send the tags before the recipes, but the order doesn't really matter as long as it's consistent.