Using select elements with large amounts of options (more than 500) is cumbersome. Pressing a key on the keyboard while a select element has focus should jump to the first option starting with the typed letter (if there is one). For bonus points, continued typing could further refine the search (like Firefox does).
Note that selects do support this, but you have to hit space first with the select focused. (Go figure.) We should support this without requiring the space bar to be hit first.
Fixed in r17331. *** This bug has been marked as a duplicate of 9764 ***