Hi,
I’m writing this here in case anyone else comes across this issue and needs a solution. We did some further investigation & found the broken images were indeed related to caching issues – it appears that there are 301 redirects set on these images that were permanently being cached by the browser, so it was redirecting to broken urls. The urls were initially being redirected from /_next/image to /nextimg/ (broken) but are now being redirected from /_next/image to /_ipx/ so to fix this we added a few more properties onto the Image component in order to change the url being passed in to the img. Hope this helps you!