I put Tweet button on the page.
On PC, it looks good for me to fetch styles from widgets.js.

But it couldn’t fetch styles on mobile like iPhone Safari like below.

I am guessing that iPhone Safari looks like stopping fetching resources early in retrieving the page.
Therefore jot (https://syndication.twitter.com/i/jot) doesn’t work on the situation.
Or, is my button wrong?
You can reproduce above by following link.
(if you see “Switch to PC View” on the bottom of the page, please click the link.)
Any thought?