Opera Bug #226934

Ghost options can appear when options are added to a select element.

Fixed in Opera 9.50 Beta 1

When options are added to a select element via the DOM, Opera has no trouble. Yet when the select element's selectedIndex is also changed in the same Javascript thread, selectable ghost options appear.

The select element below contains one option; use the buttons below to manipulate it. Pressing buttons #1 and then #2 perform the same operations as button #3 except in different Javascript threads. The problem only occurs after pressing button #3. Indeed, even the Revert button fails to work properly after pressing #3.

You can find a workaround at the my.opera.com forums.

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