First off I apologize if this is the wrong place. I went looking for the ADXStudio Community Forums but they appear to have ceased to exist since ADXStudio became a Microsoft IP so a number of clicks have routed me here instead.
So I have a fairly heavily customized ADXStudio solution that runs both french and english sites. When attempting to sign out of the portal on French pages, or any non restricted english pages (such as the profile page), it logs out and redirects to the login page as it's supposed to.
When I log out from any french page, it logs out and redirects to the login page like it's supposed to.
However, when I'm on an english page with a restrict read web page access control rule, and I attempt to log out, it logs me out, then leaves me on the same page and gives me a 404 not found error.
I looked at the requests and responses and it appears that when it attempts to redirect to the returnURL after logging out, but where the french site and the non-restricted pages pick up that I'm no longer authenticated and pass me back to the sign-in page, the English restrict-read pages just eat a 404 and sit there.
I would also note that this appears to have come from nowhere. It was working after the last build came up and has ceased to work since.