Bug: "Required" category of a tag not showing up under "category ..." dropdown
Summary: When creating a new topic from the homepage, all category options surface in the composer—as expected. But when you click into a tag (i.e. navigate to /tag/tag-name), and attempt to compose a new post from that page, all categories surface—except, ironically, the category that has set that particular tag among its requirements.
This problem stopped when disabling this component.