I've noticed on any computer I install this update on, a particular textarea element in an organizational wiki does not highlight selected text any longer. I surmise it must be the particular combination of style or javascript associated with this textarea element, since it doesn't occur on just a plain textarea with no frills.
When doing a selection in the affected textarea, the text is still selected and can be replaced by entering new text, but the extent of the selection is not visible since there is no selection highlighting. Has anyone seen this in one of their own contexts? The issue doesn't affect other browsers or systems that haven't updated, so I'm reasonably certain that 7.0.6 is the cause and not our particular version of this wiki software (Confluence 3.5.13, wiki markup editor).