Observed behaviour:
It is possible to know that the enemy team has built a geo even without scouting it. This is due to geo hiding vent's smoke when built, but the system seems to ignore los when doing so. So if enemy builds a geo it's possible to understand it by simply looking at whether the smoke is visible or not.
How to reproduce:
Play against inactive ai with cheats on and gift the ai a geo on a vent without having los on it or control the ai, build a geo and then control your units again.
Idk whether this is engine-side or game-side, or whether it’s significant