Multiplayer games will have all humans occupy red player

[Loobinex]

When you start a multiplayer game, each human will be player0, and other players will be taken over by the computer.

There are two working workarounds:

• The players wanting to be the non-red player can use the -human command line option
• The line 'HUMAN_PLAYER = RED' can be commented out in the campaign config.

This strongly suggests the issue has been introduced when the feature was introduced when campaigns could be played from non-red players. So here: https://github.com/Loobinex/keeperfx-unofficial/commit/a49f03b0bc98ac1dad859991c0dc93d0e04838a8