I’ve reported this to Teespring and all they reply with is to try another browser and clear my cookies. They won’t listen. They’re basically making Teespring unusable for the technical crowd.
The *adblocker crowd. I think I'm in the "technical crowd" but I've never used an adblocker.
Running non-compliant extensions is your right, but the results don't need to be supported. I've run into this situation a number of times, although not with adblock. My advice has been to disable the extensions, or use a different browser without them.
I agree. Ideally an extension never breaks a site. But if I were to make a store. The most robust thing in the store would be the checkout system. They’re leaving money on the table considering how little work it is to test the site with the few popular extensions. It’s basically like supporting a special payment method or exotic browser.
Compliant to who/what exactly ? Extensions are executed in a user agent, ie a software acting on behalf of a user based on the settings they prefer. If anything it's the website that's non-compliant with the user's choice.
