Hello,
I experience frequent timeouts on Linux (Manjaro, so Arch-based) when playing online (tested on many servers, including my own which is hosted on my VPS). This happens both with 1.5.8 (official binary) and Git (self-compiled).
Other clients don't seem to be affected, and the disconnect reason is "normal". This problem occurs even if I'm the only player on a server, but it does not occur during an offline practice game.
I have no issues in other games, and I'm using Ethernet, so it probably is not related to my network. I've tried playing through a VPN too and the same issue happened.