If myself or another player Hosts a game and creates a password to enter the game, the game will not appear in the list of available games. However, if a game is created without a password, it appears. This is for "v3.6.19.7 BETA". If this was addressed in the newer patch, I apologize for reporting it. I have not yet tested the newest update. Thanks!

That version was released more than 5 years ago, why would you still use it?

v3.6.29.0 (http://wa.team17.com/main.html?page=supp&area=upda&file=15) is the latest version, as can be seen in CyberShadow's signature.
Use that instead.