Just discovered another bug in Marketo forms when there's more than one form on the same page.

 

Symptoms: seemingly random behavior in loading the datepicker (or any other polyfill) in browsers that lack native support.

 

For example, Firefox does not support the native HTML <input type="date">, so the Forms 2.0 library loads a custom, JavaScript-based picker plugin (script-driven emulations of native features are called polyfills).

 

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