Visibility Notify

Used to fix Network Replication with specific mirrors or WarpZones.

Reason

By default, stuff reflected from mirror (that are normally behind a wall) or seen through WarpZones, are not considered as relevant actors in online games and will appear invisible.

Usage

Basically you place 2 (Actor -> Info ->) VisibilityNotify actors on both ends, set up a collisionradius/height that covers up visible area of the both rooms and give them both same tag.

Here's an picture of it all (stuff within the light green area will be visible online through the portal):