Problem in upgrading SDK from SP11 to SP15

Hi Experts,

We were upgrading SDK for our client from SMP SDK SP11 to SMP SDK SP 15.

We have a screen of type overlay view , agentry client is getting crash while we close this screen.

On changing the Screen Type from overlay view to full screen, it’s not getting crash.

Is there any issue with overlay screen type in sp15?

Please help and suggest.

Regards,

Shubham