How do you navigate to the /tags page?
It seems it used to go there when you clicked the “all tags” button, but now that just displays all the tags. I see now it asks as kind of a filter, so you need to be able to select the all tags setting.
But might I suggest a subtle UI change - if you select “all tags” while it is already configured to “all tags” that it opens the /tags page?
Otherwise is there some way for the user to actually get to this page?