Switching from "none" to "all" isn't working in category filter

This suddenly stopped working for me today, and I’m not quite sure why, so I’m not ready to report it as a bug just yet.

I have my top-level categories’ Default List Filter set as no subcategories" but want to occasionally check all at once to clear out new posts once in a while. When I switch to all, it refreshes as it’s supposed to, but doesn’t show the “all” list.

Click for gif screenshot