Unity Analytics doesn't work from spawned servers

[RikuTheFuffs]

After having a 92-emails conversation with unity support's guys, we found out that the analytics events (both custom and standard, such as "app run") are not sent from the game server instances.
The crazy thing is that if you try to use the
AnalyticsResult result = Analytics.CustomEvent(eventName, eventData);
call, the result is "OK" as if it was sent correctly.
Maybe the spawner controller "disables" analytics in some way when spawning a new process?