Addons do not load properly

I have a world with multiple add-ons, but after update 1.21.21, most of the add-on items do not show up in the creator menu. At one time there were empty slots for the items, now there are not even any empty slots. 

• Add-on Packs:
  • Backpacks Add-on
  • More Ores and Tools Add-on 1.1.8
  • Security++ Add-on
  • Spark Pets Premium Add-On
  • DragonFire Lite Add-on
  • Another Furniture Add-on