Bug: Thread title transforms into my email address!

I wonder if someone else has this kind of issue:

From time to time it happens, while using an iOS device, that I hit the reply button in the forum and just after that I get the message “There were problems with your submission”. Despite I didn’t wrote one letter yet nor hit the submit button. No big deal, because I can click on ok and start typing my message. But at this moment the title of my thread answer changes. It doesn’t contain the original title anymore but instead my email address! WTF? I don’t want to disclose my email address and it has no place in a thread title!

I corrected that so far manual, but that can’t be the solution, cause this is a bug.

I hope any HQ staff member read this and can (hopefully) stop it.