I can click all other Shadowlands zones to view them from the world map, but clicking on The Maw does not work. The area doesn’t highlight on mouseover either. Tested with all addons disabled.
The current zone my character is in while this is occurring is Bastion, but may occur from other locations (did not test)
edit The character I’m attempting this on has not finished the Maw intro questline so this may have something to do with it, but not certain if this is the intended behavior. Other zones such as ZM can be clicked and they weren’t unlocked on this level 58 character so the behavior is inconsistent at the very least.