There is a Twitter user whose handle has two underscores in it. Those are getting interpreted as Markdown as you can see here.
https://twitter.com/Haba/status/1190308509830844418?s=19
Another member of our forum already found a work-around. Everything seems to work when you add two backslashes into the URL, but that’s not ideal.
https://twitter.com/\_Haba\_/status/1190308509830844418?s=19
Very low priority of course, but I wanted to let you know.