Here is something that bothered me.

In the early issues of Tales to Astonish Giant man was seen several times with out his mask on while he was at his home/lab surrounded by his fan club. He was called Hank by Jan at the time. Jan had no mask. Jan and Hank are seen out of costume several times in public and were a known couple.. There was a scene when Hank first become Giant Man and is experimenting with his growth formula where he grow so large he crashes our of his house. The police who know this is Hank Pym's house investigate.

Yet no one knew Giant Man and Hank Pym were one in the same. Even Captain America seemed surprised by this even though Giant man had called Wasp Jan more then once in front of the Avengers.