on Chrome it is not possible to insert HTML in HTML View now.(Only problem in Script Builder Mode.)

It was previously worked but now after opening insert html page and klicking done button nothing happening. 

Also in opened insert Html page it is not possible to switch between Rich Text  mode and Plain Text Mode.

Windows7/64 bit 

I tried ie,mozzilla and chrome.

SI I already tried to re-install java.

SI I already tried with another computer

Any solution offers ?