Cannot pass a Dictionary through a Replicated Function

When passing dictionary (map) variables through replicated (to server) functions, the value will not print out on the client. In 4.19.2 (CL-4033788) this caused a crash but in 4.20.2 (CL-4302132) and Main 4.21 (CL-4309299) it causes the PrintString to print nothing on the client.

1. Open the UE4 Editor and create a new First Person template project
2. Navigate to the FirstPersonCharacter Blueprint and open it
3. In the Event Graph, create an event called "ServerMAP" and set Replicates to: "Run on Server" and check Reliable
4. Add a Map (Dictionary) input to the "ServerMAP" event that takes an Integer and Bool
5. From "ServerMAP" get the Keys, add them to a "ForEachLoop", and add the Array Element to a "PrintString"
6. Add an input node such as "Y", call "ServerMAP" and connect it to the Pressed Exec
7. From the Map input connect a "Make Map"
8. Add a few key/value pairs to the "Make Map"
9. Under Play change the Number of Players to "2"
10. Then Play in a New Editor Window and press "Y" on the Client

Results: The PrintString prints nothing on the Client

Expected: The PrintString should properly loop through the keys and print them out on the Client