Mozilla Software → [Firefox] crashing on Tmobile web site

Firefox crashes on Tmobile web site.

Works fine for me on FF 32.0.1.

Almost anything crashes the TMO website. It's always been flaky and I've used it for 8+ years.

It doesn't care for Pale Moon on Kubuntu at times either.

Have had similar experiences but tracked it down to add-ons and not PM itself.

what add ons were causing it.

If you are going to use NoScript, there's a couple of things you have to allow.
Coremetrics and TMO Cache are 2.

Early on, it was the web people. You never even tried to pay a bill on Monday. There was always some maintenance problem. They'd muck with something new on Sunday, Monday either site was down or not working right. By Tuesday, you had a chance.

Bill Pay has been better - ordering and plans are still getting flak on TMO support site.

I believe that is what I've experienced as well.

Might have to allow calls from TM to them in RequestPolicy, if used, as well. But that's the beauty of RP, since with it, allowing Coremetrics in NS is thus contained to just calls from TM.