I have right now found out that this very editor where I am writing in – titled “Rich Text”, whereas not the HTML one – has a bug as it does not allow any kind of pasting via the keyboard shortcut Ctrl+V (no reaction happens) on Firefox, whereas using the context menu for pasting works. As before, Midori is not affected.
I don’t remember this behavior from earlier, I have just observed it now. I assume this remark relates to the same code and does not constitute thread hijacking.
Also, the HTML validation here does not seem to like kbd tags and also removes the ping to your profile name when I try to add the kbd tag. I do not know yet where I should best submit bugs about this very interface in general.