|Component:||CSS / Browser Support|
Sorry if this is a dupe. I could not find it anywhere.
On my Drupal 7 system when I activate the option for:
Cache menu in client-side browsers.
It causes 8-10 lines of garbage characters to appear at the bottom of the screen. It may be a combination of my cache system which includes Boost, APC, Filecache running through Authcache.
Turning the option off solves the problem so this isn't really a bug, but it sure will help someone else that may encounter this.