Chrome on Windows has a right-click "Paste as plain text" option. However... CKEditor intercepts that right-click and pops up its own context menu instead, which only has a "
Paste" option. For me, that option then causes CKEditor to complain that my security settings have blocked the editor from accessing the clipboard, and requiring me to paste the text into another pop-up dialog and hit the OK button. Quite the ridiculous process for a simple paste task.
The new editor seems to work OK, but the interface is definitely rough in some spots.