When using this bag addon: https://www.curseforge.com/wow/addons/inventorian

Sorting the inventory or disenchanting does not update the position of checkmarks:

If this is an issue the developer of that add-on must resolve, could you please let me know what to write to this developer?

Thanks!

That is CanIMogIt or Caerdon Wardrobe. AllTheThings does not place icons on items in your bag, bank, or guild vault.