Repeatedly entering a letter cycles through the items starting with that letter in 2.94. In version 3.0 and higher it appears to be set to auto-complete.

As an example, entering multiple "S" in the Add a relationship Relationship drop down list in ClickOnce 2.94 searches/cycles through (Secondary Solicitor, Secretary, Senior Bishop...), but in 3.0, multiple "S" enteries displays "sss' in the the textbox portion of the drop-down list unless the beginning of an actual word/phrase is typed, in which case it will auto-complete the word/phrase.