If network fails when loading projects, all clients gets 'Gateway timeout 504'

[psvensson]

That means that nginx is up but fails to connect to the proxy-server, which is VERY STRANGE.
The logs did not show that the proxy restarted (with forever) or indeed had any problems at all.

Would it be possible to add something to the platform-specific native part of the client(s) to detect and reload borked page loads, perhaps?