Have you also experienced problems with the admin menu in WordPress 4.3? It’s a bug in chrome that you can fix by entering the following in your address field:
Also make sure that ”enable-slimming-paint” is not activated, as it will override the above setting.
More information about this bug can be found on WordPress trac ticket 33199. It seems the bug is also affecting older versions of WordPress, so it can be worth a try if you’re running on 4.2 for example.