Yes, they did. The reddit frontend on mobile is total garbage and actively user hostile.

Recently, they decided to move you to an absolute blank screen after login. Nothing is happening. You have to activate "desktop mode" before the page loads. Or you have to open a subreddit directly and click on the "Home" button afterwards. It's a joke.

The chat is a nightmare as well. Now you have the legacy and the new chat tabs. As a user, there is no notable difference between those two. I was able to pop out the chat in previous versions into an own window. They removed the button to do that, but it still appears sometimes.