Disable <CONTROL>-<ENTER> or restore prompt

[slickrcbd]

Sometimes on rare occasions when I'm trying to use the <left shift> key and type a character like ",},|, etc, I accidentally hit <CONTROL>-<ENTER>.
Thunderbird used to prompt me "are you sure you want to send the e-mail now?", but lately it just starts sending, and hitting cancel doesn't stop the e-mail or take me back to editing.

Is there any way to either turn off <CONTROL>-<ENTER> or restore the confirmation prompt?

[morat]

Is the mail.warn_on_send_accel_key preference set to true?

[slickrcbd]

No, it is false, I changed it and it is giving me the warning, thank you.
I wonder how it got changed?
I just assumed that the feature was removed at one of the updates.

[morat]

You likely checked the "Do not show me this dialog box again" option by mistake in the confirmation prompt.

[slickrcbd]

Thank you for telling me what option to look for, it is fixed, now hopefully I won't send as many embarrassing replies with errors or incomplete e-mails.