Thanks to our users in Belgium and Finland for pointing this out to us: our Pricing Page wasn’t displaying correctly in browsers that had their default language set to something other than English.

This was happening only sporadically, and only in Chrome; other browsers like Microsoft Edge were handling it correctly.

Chrome was trying to localize text for non-English users before the language resources were ready; this problem had actually been fixed in the latest version of Polymer  We are using ‘app-localize-behaviour’ of Polymer’s app-localize-behaviour (1.0.2).  Turned out we were a version behind in updating our use of Polymer.