Ritual stash tab is not supported in this version of the game

I noticed that my Ritual stash tab wasn't shown in my stash tab overview, and when i found it again, after turning on "Show Unavailable Tabs", it just showed a greyed out tab with the text "The Ritual Stash Currently Is Not Supported In This Game Version.", however it still acts as if it has the Ritual Tab Affinity, essenstially swallowing any Ritual items i deposit into my stash, and making me unable to get them back.

I noticed it first during the Merger from Mercenaries of Trarthus League, but just assumed it was the Merger experiencing an issue, but the Ritual stash tab is still stuck like that. I have no idea what could have caused this, as During Mercenaries of Trarthus, the Stash tab worked fine.

I've attached an image of my Ritual stash tab.