The reflow issues as incredible in the Twitter mobile web, at least for me on Firefox for Android. When you go back from seeing a tweet's replies to the main timeline, it might take up to 5 seconds (or even more) to load some UI elements and reach a steady state. It even scrolls to a different point than where you were before!
Twitter Mobile is hands down the worst mobile website that I know. I always use nitter.net if I want to view something on mobile. Opening the browser and manually rewriting the link is more handy that clicking on it (e.g. in reddit). That should tell you something.
Yes. Twitter on mobile web seems to have some state of the art ai to reflow the page just when I'm about to press my thumb to read a subthread , like a post or such so I always end up liking the wrong one.
On Twitter for Android, I quite often open the app after a while, and the previous state is shown. Super! I start reading a tweet, and then the popup comes at the top that there are new Tweets; at the same time, that very tweet I was reading disappears from the timeline, whilst the tweets around it remain. Why??