RedditP randomly freezes while browsing

I'm clicking next-next in RedditP and sometimes the next button just doesn't work.

I'm always on redditp.com, never on a subreddit. It happens in Chrome and Edge.

When it happens, other buttons also stops working. Next, previous (inc keyboard shortcuts)), post numbers in bottom left. I can still click sub / comments / image / user.

I notice that when it happens the title (top left) changes to the next post but the content doesn't load. I can click "Comments" to find the post that seems to have caused the freeze.