When people come across such things please report them to https://webcompat.com/ There are some Firefox, IE and webdevs that work on understanding what is broken and trying to get sites to work cross browser.

Sometimes, it's clear what minimum window size they've assumed. I know of one (bank login) which doesn't work well on a netbook due to this.

I tried to report the problem via the site feedback link which they helpfully provide in most of their page footers. It fails in Firefox but works fine in Chromium; I ended up reporting two problems reported instead of one.

There have been extensions for Firefox that opened tabs in IE compatibility mode, which were needed occasionally in the past. I wonder if such a thing for chrome compatibility will end up having to be made. Hopefully not.