Raw data showing in issues list Open/Closed/All tabs when multiple labels applied

To reproduce, open the issues list with two labels applied: https://gitlab.com/gitlab-org/gitlab-ce/issues?scope=all&state=opened&utf8=✓&label_name%5B%5D=Accepting+Merge+Requests&label_name%5B%5D=Backend

When applying any filter, including another label, the issue no longer occurs.

Example: