When I have a task that lives in a list with slightly different statuses than the list (in our case, sprint) that you add the task to as an additional list, I get an error when I'm in Board view and try dragging that task to a status that doesn't exist in the "home" list.
Ideally Clickup would find a better way to handle those differences, but at the very least, if I'm in Board view and try to change it to a status that will give me an error, that column should collapse/hide when I start dragging the item so I can't choose the "illegal" status. :)