It works for me, you should have combo slection and from there you have few selection option, either select from list of all actors on the level which oyu can name search, select currently selected actor or use sample icon (you know one that is usually used for picking sampling color in image editor) to pick actor from the viewport.
If you don’t see your target actor what are you want use as a target? since if it’s not on the list that means it’s not an actor or it is not on the map
Also forgot to mention alternative other option, you can make FVector with selection widget
UPROPERTY(EditAnywhere, Meta = (MakeEditWidget = true))
FVector TeleportTarget;
MakeEditWidget creates editable position selection widget on the map when you select actor, might be useful for you for something else too