Contacts, distributionlist etc

Please, clarify.

a. I have 10 contacts
b. I make a distributionlist ‘example list’ with the 10 contacts
c. an 11th contact appears with name: ‘example list’
d. from then on the shown name of member of the distributionlist is:

“example list” (the light blue block when writing a new mail after: to).

Why becomes the name of the distributionlist the shown name in de emailaddress when not the list but a member of the list is choosen for a mail?

How can i prefent that?