I have the same problem, and what makes it worse is that it will be even saved in the activities list. So data I didn't want to publish will be preserved in the activities list, just because I clicked outside of the comment field. It would be great if the system would save the comment without actually publishing it, so we could continue editing the comment later, but it shouldn't post the comment when we leave the comment field. The current way of working is not common in browsers and other apps, so someone can easily publish something she never wanted. For example, posting a message that I wouldn't intend to send out in that form.

Dávid Polynár: Hello Dávid, thank you very much for your feedback and the detailed explanation! I can see the point, and we'll seriously consider changing the behavior of posting comments. I translated your comment to English so that users from other countries will also understand and comment on it.