This content isn't available after calling powered.embed($container, config)

Anonymous

Well, I don't see Embed token mentioned in your post, so guess that you may embed with the access token? The Embed token is generated specifically for individual reports/dashboards/tile with the accesstoken(See GenerateToken).  You can get the GenerateToken by calling the REST API or with Power BI API.

var tokenCredentials = new TokenCredentials(authenticationResult.AccessToken, "Bearer");

            // Create a Power BI Client object. It will be used to call Power BI APIs.
            using (var client = new PowerBIClient(new Uri(ApiUrl), tokenCredentials))
            {
                 
                // Get a list of reports.
                var reports = await client.Reports.GetReportsInGroupAsync(GroupId);

                // Get the first report in the group.
                var report = reports.Value.FirstOrDefault();

                if (report == null)
                {
                    return View(new EmbedConfig()
                    {
                        ErrorMessage = "Group has no reports."
                    });
                }

                // Generate Embed Token.
                var generateTokenRequestParameters = new GenerateTokenRequest(accessLevel: "view");
                var tokenResponse = await client.Reports.GenerateTokenInGroupAsync(GroupId, report.Id, generateTokenRequestParameters);

                if (tokenResponse == null)
                {
                    return View(new EmbedConfig()
                    {
                        ErrorMessage = "Failed to generate embed token."
                    });
                }

                // Generate Embed Configuration.
                var embedConfig = new EmbedConfig()
                {
                    EmbedToken = tokenResponse,
                    EmbedUrl = report.EmbedUrl,
                    Id = report.Id
                };

                return View(embedConfig);
            }

The embed token is a string starting with "H4sIAAAAAAAEA ....". A static html demo attached for your reference.