"Body contains" leaves the search term selected in the email
When you search for something using "Message contains" (and possibly others), the term you search for is highlighted everywhere in the body of the resulting emails using a yellow background, which is nice.
However, the first occurrence of the term in the email is also selected, this means that on replying to the email (which is often what I need to do), only the selected term is included in the reply as quoted text (which is most certainly not what is needed). So the sequence goes Search -> Reply -> Swear -> cancel -> unselect -> Reply.
This was discussed on the Evolution mailing list starting here: