I have the same exact issue. Problem only began happening for me after the latest Minecraft Patch (1.21.2).
I can use a Realm with experimental addons installed.
I can use a Realm with no addons installed.
I can NOT use a Realm with any Marketplace addons or worlds installed.
The addons only work on non-payed worlds (Not Realms).
This issue is happening for me when I use Realism Craft or The 15th Anniversary world. I also have several other addons (not worlds) like Naturalist, Natural Disasters, etc.
CrystalDallas
I have the same exact issue. Problem only began happening for me after the latest Minecraft Patch (1.21.2).
I can use a Realm with experimental addons installed.
I can use a Realm with no addons installed.
I can NOT use a Realm with any Marketplace addons or worlds installed.
The addons only work on non-payed worlds (Not Realms).
This issue is happening for me when I use Realism Craft or The 15th Anniversary world. I also have several other addons (not worlds) like Naturalist, Natural Disasters, etc.