Hello,

We have two ComboBoxTools contained in an UltraToolbarsManager.  Both tools have AutoComplete = True and DropDownStyle = DropDown.

One of the users of our application has reported that the auto-complete functionality randomly stops working.  I have witnessed this behavior and can verify that he is able to type in the editor portion of the ComboBoxTool but the text he enters does not trigger auto-complete (despite him typing characters that match the start of multiple items in the dropdown).  After restarting the application the auto-complete functionality works properly.

The only unique characteristic of this user is that he has a visual impairment that requires him to use a screen resolution of 800x600.  However, after some troubleshooting we (the developers) have been unable to recreate this issue even when setting our resolution to 800x600.  We also tried adding a feature that re-populates the ComboBoxTool on demand, but even this does not fix the auto-complete issue for this one user.  He always has to restart the application.

I should also mention that the user only uses the auto-complete functionality on one of the two ComboBoxTools.  However, when auto-complete stops working on the one, it also stops working on the other.

Do you have any suggestions for additional troubleshooting steps we can take?  Thanks in advance.