Summary: A url that twitter mobile site can not load, crushes any page containing this url
Invalid hex characters crushes twitter mobile site as example go to
twitter won't load.
1) Sending such url on a direct message, twitter will no longer be able to load the conversation, F429765 2) Tweet such url, anyone following you won't be able to load any tweets F429766
I think Twitter on the client side trying to find a value for %xx which is not possible so it raises an error
This issue works only on https://mobile.twitter.com/ (not working on IOS, Android and https://twitter.com/ ) however, all twitter mobile users with no twitter app should be affected