I just noticed that the updated fix for fixing the size of the initial Twitter embed (until user clicks expand) helps with an issue I have in Firefox. Before this fix, I couldn't see the Tweet at all. At least now, I can see that it was a Tweet, even though I can't actually any text or images.

But I see from the SN Analytics that Firefox has about a 20% browser share (over the past 30 days). That's more than twice the level typical for most sites. (And the share of Windows OS, versus Mac, Linux, Android, iOS ... 18%, LOL -- the SN userbase is not typical for a content site. Congrats!).