nodeBB version: v4.5.0

Hi everyone.
As you know, ActivityPub's 'All Known Topics' comes from /recent?cid=-1 and I wanted to make that accessible as either a category or a sub-category.

So I added a "Remote Category", with the Category ID of -1 for the aforementioned. Bad idea!
The category was added fine, it shows up as 'Uncategorized', but I can't move up or down the Category list, place it as a sub-forum of another category, or even make any changes to the category (changing icon, topics per page)

If I try to change the 'Set Order' to 99, it throws up an error

Error 
Category does not exist

Which I understand because of the Category ID of -1

So I decided to 'Purge category' - Thinking that the 'Remote Category' acted like a symlink in Linux.
It didn't delete the category itself, but it did delete any topics that were from the Fediverse (that's fine)
But it did remove all Privileges from the category.
Disabling the category doesn't remove the category from the Categories list either (Which I suspect is because of the error above)

But now I am stuck with this category.
I was able to remove 'View' privileges from the category for non-admin users, but I can still see it.
Now, my issue is that I can't move it or hide it myself.

Is anyone able to help on how to fix this?

I did find I was able to add a directory link in the 'Navigation' bar, which works perfectly, and non-admin users can still view the topics via the Navigation.

Thanks in advance