Google Chrome reveals my location, but not FF

[Brainbuster]

When I use my VPN and go to IPBurger or ipmarker with Google Chrome (my favorite browser), it shows my i.p. #'s as being the changed to the VPN's i.p. #'s...as it should.

But then it says my actual location, city and state.

When I do it with Firefox browser, everything checks out under the VPN location. It shows the VPN location as well as the numbers.

Will someone please enlighten me here? I have no idea why this happens.