Drop Down List Not Displaying

[Bogge31]

Have an issue with the the drop down list not displaying always. Below are the steps to recreate.

Open page with combo-box
Initial focus is placed in combo-box
Note combo-box list is populated and displays
Click combo-box drop down arrow
Note combo-box list is no longer displayed
Click combo-box drop down arrow
Note combo-box list briefly appears and then is no longer displayed
Note repeated clicks of combo-box drop down arrow cannot force list to be displayed again
Place focus elsewhere on page
Return focus to combo-box
Note that combo-box list is populated and displays

[shochdoerfer]

Which browsers are affected? Any chance you could put together a demo to show the problems?

[philippgrimm]

Have you styled the trigger in any way? Sounds like it covers up the field and prevents the click.