I’m adding a canned reply because it’s not the first time I’ve needed to give this response. In fact, why don’t I just look up the last time I did this and re-use that wording? …
Ah, here it is. [ctrl-c] [ctrl-v]… [ctrl-v]… [CTRL-V]. [right-click->paste].
Fortunately, this one isn’t onerous to retype, but I wish I didn’t have to.
Aaand now that I’ve done the retyping & closed the dialog, I see that all my pasting went into the message reply window.