Caching bug with session management

[isc-aray]

A user reports that their session boards are sometimes still accessible after logging out because the cache is not properly invalidated on logout.

[filiphric]

Hello Andrew could you please provide an example test that shows this behavior?

[isc-aray]

Hi Filip, unfortunately, the issue doesn't appear to be consistent, but there definitely seems to be some issue when there are multiple users logging in and out quickly that causes boards to sometimes show up when they aren't supposed to. You might be able to reproduce by creating a bunch of users and throwing some automation at it to create a bunch of public and private boards.

I'm sorry not to be able to provide anything more concrete right now.