A navigation problem at the beginning of the campaign - Only on dedicated server

I would really like to use this campaign on my servers.

But, I tested it on my servers, and the only problem I couldn't solve was that in the first map, players and sometimes bots, appear under the ground, started under map.
If it is possible to see this, I would appreciate it, I would really like to have this campaign on my servers.
I already have the other campaign ( LookDown ) on my servers for a long time without any problems.

I have pictures to show if you want to see.