Interface return Map type Value Bugged?

Ether i am doing something wrong, or it is not possible to return map type value via interface.
Sending map type with inputs works correctly. ( when we have broadcast behaviour type, object sending messages with map type included to set number of targets)
Screenshots self explainatory. Thanks in advance.

■■■■, I got the same ! Did you found a solution ?

You can use custom struct containing Map and pass this struct through interface.

Still occurs in 4.20