I recently posted a question, but after reviewing the question I noticed the Post Question button is disabled.
I tried to make little changes in the question body without success.
Finally, I edited the HTML in the Developer Tools to enable the button, and posting the question worked. It is an edge case probably, but just reporting it in case you find the problem.
Using Google Chrome on Ubuntu 20.04.
Actually, right when trying to publish this very question on Meta, I am seeing the same issue again:
After entering the question tags I pressed Enter and the Post Question button is disabled.