Leave the email icon alone!
Moving the mouse over the list of emails, and perhaps more annoyingly it just being left there, highlights a line, which should be more than enough, but also pointlessly replaces the email icon with a useless magnifying glass, except for GitHub notifications. Navigating up and down using the keyboard does the same highlight plus a fairly gauche extra border, but leaves the icon alone, as it should. I often look for a particular green icon, and end up missing one because the mouse pointer happened to be "inadvertently somewhere on screen", very irritating.
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Pete Lomax
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