Not sure I sure i want to admit my experiance today.
I tested my two switches and got your results...I was confussed, how could the circuit work. I was even using my high dollar Fluke.
This worried me all afternoon, coming back from an errand, I decide to verify. this time using a Radio Shack that I abused that was in trailer.
First check...same as yours. checked my meter auto setings, tested my leads for open/closed.
THEN, i got the expected
open when pressed.
I am sure I repeated this several time.
Maybe it was a meter setting
BTW...I quit work years ago when I was getting confussed alot
took a couple photos since I can forget....