I am all of a sudden having problems with 3 combo boxes that have a list of US states and companies -- all exhibiting the same behavior. (The third I just recreated thinking that the control might be corrupted.) They are all based on the same table. They are set to auto expand as someone types.
The following are some of the values in the list: Habib, HAC, Hard Rock Cafe, Harris.
Typing "ha" finds Habib. "harris" finds Hard Rock Cafe, only the Har deletes those letters in the combo box, leaving "har" highlighted, followed by "d Rock Cafe". It does not go beyond Hard Rock to highlight Harris.
I don't know whether this post went up, but I discovered the problem -- Auto correct was changing Cafe to Cafe with e grave, as in the French, and that would halt the combo box search.
Now I can find Harris on the first try. My apologies for not finding the problem before posting.