When I was checking my SoP for grad school, I noticed that I didn't use a title when referring to specific professors.
For example, instead of writing: "I spoke to Prof. X and Prof. Y" I wrote: "I spoke to X and Y".
This mistake never crossed my mind as during our email conversations they told me to just call them by their first names. However, I realize that other people on the admission committee might take stuff like this personally.
Do professors generally take offense when somebody forgets to use a proper title when referring to them?