url is:
https://foo.bar.net/
realm is:
baz
initial log in brings you to: https://foo.bar.net/#iss=https%3A%2F%2Ffoo.bar.net%2Fkeycloak%2Fauth%2Frealms%2Fbaz
every time you refresh the browser:
&iss=https%3A%2F%2Ffoo.bar.net%2Fkeycloak%2Fauth%2Frealms%2Fbaz
Gets added to the end of the existing url, so you end up with an enormous url that is just &iss=https%3A%2F%2Ffoo.bar.net%2Fkeycloak%2Fauth%2Frealms%2Fbaz over and over again