Ashley I just downloaded r222, built my app, uploaded it to my website, and brought it up on my iPad Pro. After it updated and restarted the page looked exactly the same. (See picture above.)
DETAILS:
Resolution: 900x525
Fullscreen in browser: Letterbox scale
Is there anything else you want me to look at or try?
NOTE: I didn't uninstall r221. Hopefully, that didn't invalidate the test.