Version: e5 n900 4.5~20100813.1163254-1maemo1.1164259

Create new contact group: lookup doesn't pop up at last name or mail address.
  Sometimes it works for firstname.

Steps:
1. Enter a test contact.
2. Open create contact group editor.
3. Enter the first letters of the test contact into a recipient field.
=> cannot click on the lookup.
A reliable lookup would be useful here.