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 a picture of it all (stuff within the light green area will be visible online through the portal):