This likely is a Battlenet issue, but I don’t think there are dedicated bug report forums for it. It might be quite Overwatch-specific in a way though.
This is an issue particularly annoying to me because of my random disconnection & SR loss on main menu I spoke about in this thread.
Essentially, it appears to me that if you lose connection, Overwatch will have a very bad time reconnecting (even though your net is back up - I could personally confirm this because I had a ping window on my secondary screen working again).
Either you will be stuck on the “Connecting” screen either you will be kicked off to the login+password screen - I suspect this is because Battlenet lost connection and doesn’t actually time out (while OW does), or does not manage to relog.
Because my net connection is (amazingly unstable) LTE, it is possible that the reconnection causes an IP change. This may be the reason why Battlenet struggles.
This is problematic because for those affected it will increase the time to log back in a lot and so penalizes the team much more than it should and basically guarentees a SR loss to the player.
I had a friend to who it seems to be a problem as well, and our setups are vastly different: I am running Linux (using Wine) with LTE net connectivity and he is running W10 with (an awful ISP’s) fiber.
I really hope this gets fixed, because it contributes to make life hell to those with a poor net connection. Thanks!