[stnvh]

Using Firefox with the user agent changed to chrome seems to get around this

[stavros]

Of course it will, so the question becomes "why drive away Firefox when it works fine"?

[Polarity]

we all know the answer

[tssva]

Because Firefox has such a small market share that it isn't worth spending the resources to support it.

[detaro]

How is adding a thing that complains that the user is using Firefox less resources spent than not doing it?

[TwoFx]

Adding the thing that complains is a one-time cost. It may work on Firefox now, but making sure that it continues working on Firefox is a continuous resource investment.

[detaro]

And not adding it and not testing for Firefox would cost nothing, and currently improve the user experience - because it actually just works, as a lot of things just do.

[AnonC]

I recall that the advice given to web developers for a long time was to query browser capabilities instead of relying on a user agent string. If this site is indeed relying on the user agent string, I don’t get why larger companies which probably have better capable teams resort to this.