You can see “Johnny Doe” loading up in tiny writing in the top left hand corner. Segment of the blue circle is the twitter logo so it’s clear things are loading, just not correctly. Problem isn’t repeatable – it isn’t happening every time. Only some times.
HOWEVER, it seems to fix itself when the window is resized?
I’m not too knowledgable about all this (in fact, all I’ve learnt about coding, etc is through playing with BookCard), so I can’t give much more technical insight.