PowerBIIntegration.Refresh() PowerApp workaround??

I identified this topic today after encountering a similar issue. I successfully resolved it by manually editing one of the control JSON files. As a result, my application can now utilise PowerBIIntegration.Refresh() with Tablet layout.

1. Download a copy of your App
2. Change file extention from ".msapp" to ".zip"
3. Open the zip file, find & copy "1.json" (in Controls folder) to your local pc 
4. Open your local 1.json and locate section similar to below

        "Type": "ControlInfo",
        "Name": "PowerBIIntegration",
        "HasDynamicProperties": false,
        "Template": {
          "Id": "http://microsoft.com/appmagic/hostcontrol",
          "Version": "1.6.0",
          "LastModifiedTimestamp": "0",
          "Name": "hostControl",
          "FirstParty": true,
          "IsPremiumPcfControl": false,
          "IsCustomGroupControlTemplate": false,
          "CustomGroupControlTemplateName": "",
          "IsComponentDefinition": false,
          "HostType": "Dynamic",​

• Add HostService section below

          "HostService": {
            "Type": "ServiceInfo",
            "Name": "PowerBIIntegration",
            "ServiceKind": "HostWadl",
            "WadlMetadata": {
              "WadlXml": "<application xmlns:xml=\"http://www.w3.org/XML/1998/namespace\" xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" xmlns:service=\"https://powerbi.com\" xmlns:siena=\"http://schemas.microsoft.com/MicrosoftProjectSiena/WADL/2014/11\" siena:serviceId=\"PowerBI\" xmlns=\"http://wadl.dev.java.net/2009/02\">\n                    <doc title=\"PowerApps integration\" />\n                    <resources base=\"https://powerbi.com\">\n                        <resource path=\"/triggers/refresh\">\n                            <method siena:requiresAuthentication=\"false\" name=\"POST\" id=\"Refresh\" siena:isHostFunction=\"true\">\n                                <doc title=\"Triggers a refresh of the PowerBI Report.\" />\n                                <request>\n                                    <param style=\"query\" name=\"api-version\" type=\"xs:string\" required=\"true\" fixed=\"2015-02-01-preview\">\n                                        <doc title=\"The api version\" />\n                                    </param>\n                                    <representation mediaType=\"application/json\" />\n                                </request>\n                            </method>\n                        </resource>\n                    </resources>\n                </application>"
            }
          },​

• Replace original "1.json" with editied 1.json using 7-Zip or WinRAR
• Change extension back to ".msapp"
• Import App