To see this: 1. Launch apprunner on the Mac. 2. Move the mouse cursor over the Composer icon in the lower right hand corner (the one that looks like a fountain pen). 3. Watch as the window resizes itself. If you're viewing a page that's long (eg macintouch.com) garbage will also be drawn in the small bit directly above between the arrow icons for the scrollbars.

Changing to all platforms (happens under Win 98 as well).

This sounds like an Event Handler thing.

This is the result of something being done by the button renderer in response to a NS_MOUSE_ENTER event. Eric, I think that's your stuff.

assigning to evaughan as p4 for m5

Verified Fixt. April 27th build.