TINY-3640: Fixed text content floating on top of dialogs in IE11
TINY-3640: Fixed text content floating on top of dialogs in IE11

TeamupCom/tinymce,tinymce/tinymce,FernCreek/tinymce,TeamupCom/tinymce,tinymce/tinymce,FernCreek/tinymce,tinymce/tinymce,FernCreek/tinymce