allow-downloads directive is disabled for Sanboxed frames on SaaS

[aslam24196]

Hello Qlik Community,

We are using an extension called media box on Qlik SaaS that can frame a website into the extensions UI. For our use case, we have use this media box to display the Qlik Sense On-Premise Application Sheet that has an On-Demand App Generation Button connected to our NPrinting Reports. This is because we are still transitioning our NPrinting reports to Qlik Reporting and we want the feature to be available in Qlik SaaS at the moment due to limitations with SaaS. While the Authentication to the Qlik Sense On-Premise and the On-Demand Report Generation works within the Media Box Frame, The Download does not work. It looks like the directive 'allow-downloads' is disabled. 
The following is the error we see on the console - Download is disallowed. The frame initiating or instantiating the download is sandboxed, but the flag ‘allow-downloads’ is not set. See https://www.chromestatus.com/feature/5706745674465280 for more details.

Is there any alternative for this use case.

Attaching screenshots 

Thanks,

Aslam

Qlik Cloud Qlik Sense Enterprise on Windows Qlik NPrinting