Hello, in February I reached Expert title and in the sidebar I got a "Propose a problem/contest" button. On the next contest, I lost the Expert title and the button disappeared as well. I regained the title about 10 days ago, but the button never reappeared, so I'm wondering is it a bug, did the rules about problemsetting change in the meantime, or something else happened? I have read the FAQ blog post and it states that Experts need to have participated in at least 25 rated contests to propose problems, which I have, so I really don't understand what's the problem.

Thanks in advance.