I'm enabling "Hide public problem tag" in "Manage profile" page. When I click save, the tags are not visible on problem pages. After some time however this resets and tags show up again. The "Hide tag" option is still set, but I must click save again to have tags disabled. The process repeats.
I'm using Chrome browser v. 52.0.2743.116 m. I also using addblock, but it's disabled for spoj.com domain.