Rejoining games as spectators instead of player in some cases

[Dunedan]

There have been reports that rejoining games isn't possible sometimes, as the rating for the player rejoining the lobby doesn't show up (https://gitea.wildfiregames.com/0ad/0ad/issues/7185). There was already some discussion regarding this topic in the following thread:

Analysis of logs for cases where that happened to players showed that in these cases the players show up as connected with two different instances of 0ad to the lobby server. As we can assume they didn't do that intentionally, it's still not clear how that can happen.

Workarounds which would fix this problem as well would be https://gitea.wildfiregames.com/0ad/0ad/issues/5320, https://gitea.wildfiregames.com/0ad/0ad/issues/4203 or patching Slixmpp to let EcheLOn keep track of all connected resources of a player, however these would just be workarounds, without addressing the root cause.

What I need for further debugging to find the root cause are:

• whenever this problem happens to you, ping me in the lobby
• whenever this problem happens to you, reply here with the following information:
  • operating system
  • kind of internet connection (landline, mobile network, satellite, ...)
  • list of installed mods
  • reason why you left the game in the first place (crash, loss of internet connectivity, ...)

[Dunedan]

I just retrieved the confirmation that this bug happens unrelated to being in a game or not. So just loosing connection to the lobby and rejoining it, might trigger it.