Hi all,
(sorry for my english)
i use ext 4.2.1, and i also try to use the last nigtly released but this is one of my tooltip:
ToolTip_problem.png
Like you can see Description occupy two line, because the tooltip don't enlarge his with, but in this way comes to be eliminated another line because if the text goes on more line the tooltip cut off the text. I try all the workaround use in this and in other post but in IE9 the problem persist.

Anyone can help me?