MatchState not appearing in GameState classes

I’m quite curious as to why some variables/functions would just not appear in blueprint regardless of it being tagged properly in C++

this is a code taken from Github’s source. AGameState.h

/** What match state we are currently in */
UPROPERTY(ReplicatedUsing=OnRep_MatchState, BlueprintReadOnly, VisibleInstanceOnly, Category = GameState)
FName MatchState;

it clearly stated it’s BlueprintReadOnly. But doesn’t seems to be appearing at all in the blueprint editor.

Are you looking at the git release for the version of the engine you’re using?