tooltip placement sometimes will require bubble to point downwards

[Adam Peller]

if the widget is at the bottom of the screen and you have a Tooltip, placeOnScreenAroundElement will choose to place it above instead of below the widget; the bubble must then be inverted somehow to point downward. Either that, or we need a different design.

[Adam Peller]

use test_validate.html for example. Scroll to position a textbox at the bottom of the page, then hover or cause a tooltip.

[bill]

This was fixed before beta.