MediaWiki 1.25.3
ConfirmEdit 1.3
ConfirmEdit is set to use QuestyCaptcha, and to confirm upon page creation.
Steps: When I try to save a new blank page, MediaWiki asks if I'm sure I want to create a blank page. I confirm this by clicking the save button again. Then ConfirmEdit gives me a captcha, which I answer correctly, and I click the save button again. Then MediaWiki asks if I'm sure I want to create a blank page again. And so on. I expected that I would only have to do each confirmation once, and then the page would save.
The page happened to be a user talk page (my own), in case it makes a difference. Also possibly interesting: QuestyCaptcha seems to be giving the same question over and over again as I go back and forth between the two different confirmations.
I am not an administrator on this wiki (though I should be in a few months at most), so I might not be able to help as much.