IE<= 10: I can type characters inside contenteditable=false element -
    this dom structure:       <div contentediatble="true">    <span contenteditable="false" class="my-block">      <span contenteditable="false">my block</span>      <i contenteditable="false" class="icon-remove">x</i>    </span>  </div>        root <div> looks textbox:   in ie 9 , 10, when click root <div> , suppose caret after <span class="my-block">  element, , when typing, words should after whole block.   but actually, when start typing, characters inside <span class="my-block">  element(rather after), followed <i contenteditable="false" class="icon-remove">x</i> , , can delete contents of <span class="my-block">  using backspace(but not delete whole span)   this annoying , it's hard fix. ie makes tons of troubles developers :(   however, expected result works in ff, chrome , ie11...