Inconsistent 'Skip Owner' Replication Behavior Between Editor and Packaged Game

When a variable is set to Skip Owner replication, it is still being replicated to the owner in a packaged game. This is inconsistent with the behavior in the editor, as testing this using Play in New Window with 2 players seemed to function as expected, meaning the client printed "default" even after the value was changed on the server.

1. Open the attached project (make sure Steam is running before attempting to play)
2. Package the game for Win64
3. Run the game on two PCs
4. On the Client PC, press 4 to print the Debug String variable (set to Skip Owner replication, should print default here)
5. On the Client PC, press 3 to call the server function that sets the string to "changed on server"
6. On the Client PC, press 4 once again

Result: "Changed on Server" is printed on the client.

Expected: The value on the client remains the same (i.e. "default" is printed).