In some situations, clicking on the closed caption button inserts the timedTextMenu_mwe_ogg_player_1 div at the end of the body instead of within the player. I've seen this in both Firefox and Safari. When it occurs in Safari it gives the following error:

ResourceLoader.php:945
TypeError: Result of expression 'subPage.title' [undefined] is not an object.

The relevant code seems to be:
var langKey=subPage.title.split('.');

Version: unspecified
Severity: normal
URL: http://en.wikipedia.org/wiki/L%27Orfeo