As described in The new ask page is now live on the network!, all new questions now go through a workflow that finally leads to the pleasant announcement "Your question is ready to publish!":
I would expect the UI to show a button "submit" just below that box. However, you need to go all the way down to the question to click in "Post your question":
For this, would it be possible to have a button just below the text to allow posting the question? Something like this: