Some structures' loot chests do not contain any items

Chests in some structures no longer contain any loot. This is known to affect:

• Villages
• Ruined Portals
• Bastion Remnants
• Pillager Outposts

Potential cause (thanks to /u/BlaCoiso on the Mojira subreddit)

Structures generated from jigsaw blocks, either through normal world generation or by force generating them using the jigsaw block interface causes chests to generate with no loot