We've had a couple reports that embedded tweets can't be viewed using IE 10/11. There are still corporate networks that use it. It turns out the problem is the user agent. Is there a way incorporate this fix into the addon?
How to fix Twitter embed in SharePoint
Twitter embed has a stupid, built-in failure condition: if the User Agent contains IE10 or older, the embed script will not load. This causes SharePoint embeds to fail. This post describes how to fix that.
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