The screenshot below should be self-explanatory:
Not sure if it is expected behavior or a bug, but to me look more like an UX issue.
Hmm, I went to look at it in dev tools, but I’m not seeing that using Vivaldi.
* note, my browsers minimum font size is tweaked up a bit
Aha, I caught it - it only starts wrapping once the page is scaled to 125%+ in Google Chrome. But still looks like an UI issue - because not all topics are wrapped this way. Actually, even longer ones are not.