In IE6 to IE8 there is a bug when showing an ExtJS 2.2.1 GridPanel that can be reproduced e.g. with this sites Basic Array Grid example.
When clicking into the grid while holding Ctrl or Shift, doing successive clicks, it happens that the text is marked as if the grid where pure text, see attachment.
In later versions this problem seems to be fixed. Is there also a fix for ExtJS 2?