Paul Farquhar
Legend
It's not
Oh yes it is!
It's not
The changeling shifting doesn't sit right with me. The text is taken almost directly from Alter Self which is a 2nd level spell. Other races that cast 2nd level spells can't do so until a higher level and even then only get it once per day. The changeling can morph at will at level 1. While Alter Self isn't the most powerful 2nd level spell, its still a huge boost to the social pillar that feels too powerful to come from a racial ability.
First of all, if you use wildshape to become an animal, you are no longer a changeling. Much like I wouldn't allow a half-orc to use their half-orc resilience to not drop to zero as a wildshaped animal, or any number of player characters to use Darkvision on an animal shape that doesn't have it. Since these don't apply, changeling doesn't apply.
Well, the issue isn't about any particular combo. The argument was that it was abusable.As to whether changelings can wildshape into an ape and then change shape into a humanoid, the wildshape text says "you retain the benefit of any features from your class, race, or other source and can use them if the new form is physically capable."
This seems to stop things like an aarakocra turning into an ape and still trying to fly without wings but not something like half-orc resilience which would function perfectly fine with any animal shape. Considering the changeling druid-ape is already a magically transformed animal-thing, i don't see why your magical transforming body feature would suddenly become incompatible with your magically transformed body, but i guess it's ultimately up to DM's discretion until they come out with a FAQ on the topic.
*Changelings live in a world where people know Changelings exist. That can make infiltration, especially in places where people are trained to protect against infiltration (which I imagine would include most of the interesting places a changeling adventurer might want to infiltrate) will know to be on the lookout for anything that might be suspicious, even from the people they know and trust.