When booting "base norestore" and loading opera-11.tcz from the repo, I have no issue with the text entry on the first field in the new email account wizard. Perhaps a tce-update would eliminate the issue seen earlier, not at home to try it now. Or perhaps a particular ~/.gtkrc-2.0 font setting is having an effect.
Oh, but I do see the pop up upon closing opera both with Xing the window or by the exit in the menu. Oh well, we take the bad with the good with proprietary apps.