I can't comment on this particular case, but Google have in the past been observed to be intentionally crippling its sites on IE and Edge. I had a Windows phone running 8.1 and if you browsed Gmail or GMaps you got something that looked straight out of the web 2.0 days. It looked nothing like the version that you'd see on Android. However, if you swapped the useragent to that of Chrome the site rendered just fine.
If they were happy to break the functionality of their sites on Windows Mobile then I'd quite readily believe they'll try other dirty tricks.
Biting the hand that feeds IT
