I have the same with a site that I edit with the Typo3 CMS, version 3.8.0 (I know, its old, but the owner is busy with other parties to change the CMS). I cannot edit the text of any of the screens: the editor(s) won't load.
Therefore I use know the Microsoft patch UASU IE7, that lets the CMS think that it is IE6 it's connected to. Not neat, but it works.
It should be helpful when Chrome works as IE6 and IE7 and ofcourse as CHROME!
It is soooo fast.
What a relief.
Jacob.