There is a typo in the Deluxe Edition equipment dialog for both Ilav Dralgoner and Mehrunes' Harbinger, after you have completed their respective quests. When you ask for equipment from them, you will get the option to say "Nevermind". This should instead be the grammatically correct "Never mind", with a space.
A string fix with "Never mind" that could be re-used is attached in the images below (dialog with Bliss/Crucible smiths).

Attached Files:
bugged.png
stringfix.png