Chests spawned in fishing huts are not spawned as Lootr chests. Not so sure if explicit integration has to be added.

Tide 1.3.3-fix-1.20.1
Minecraft 1.20.1
Fabric Loader 16.7

I'm looking forward to putting this as part of a modpack I'm making, and I appreciate that it is getting updated with new features / fixes to improve the overall experience. Thanks!

The chests in fishing huts always contain the same loot, and therefore don't have separate loot tables. That's probably why they don't spawn as Lootr chests.

To be honest I kind of forgot fishing huts even exist, but I can definitely add actual chest loot tables in a future update which should fix this issue.