The challenge grid view automatically switches back to the achievement rank view every 10 to 20 minutes for some unknown reason

[dinoboff]

It could be related to authentication.

The view reloads on each current user changes. I think you mention oauth tokens are valid for short time periods. I am guessing when the oauth token refresh it trigger a user change event.

One solution would be to make the selected tab part of the url, so it reload safely.