Java 7 Update 21:Mixed Code Warning for applete with servoy

Hello ,

I am posting this question , just if anybody else has fixed this issue or has some better idea .

We have an Signed applet in out servoy webclient which was working fine before Java 7 update 21 .
The Applet is loading perfectly without any warning , but when a javascript call is made to communicate with applet it throws in Mixed Code warning . I have already added

Trusted-Library: true

in Manifest.MF and resigned applete , still the same issue . Any idea is appreciated, Thanks .