Can't connect to a dedicated server second time from iOS

In ios, at first trial to connect to dedicated server with Open Level node, it connects successfully. However after I disconnect from the server and reconnect again with same Open Level node, it doesn’t connect. There is no sign of unsuccessful connection attempt in the development server logs.

If I restart the game on ios, it connects successfully again, but again, only once.

I’ve met the same, and it’s already fixed in 4.16.

This link contains the change that will make it work:

And those change are already in 4.16 source code.