Menu missing when switching from View to Edit mode

I have the same problem.

Using the "Extend menu options" interaction after switch to edit mode works for me.

const base64Icon = "data:image/png;base64,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";
 
// The new settings that you want to apply to the report.
const newSettings = {
  extensions: [
    {
      command: {
        name: "extension command",
        title: "Extend commands",
        icon: base64Icon,
        extend: {
          // Define visualOptionsMenu to extend options menu
          visualOptionsMenu: {
            // Define title to override default title.
            // You can override default icon as well.
            title: "Extend options menu",
          }
        }
      }
    }
  ]
};

var embedContainer = $('#embedContainer')[0];
report = powerbi.get(embedContainer);

// Update the settings by passing in the new settings you have configured.
report.updateSettings(newSettings);

Ref: https://microsoft.github.io/PowerBI-JavaScript/demo/v2-demo/index.html#

1) Embed > ViewMode > Run
2) Interact > Enter edit mode > Run

3) Menu Extensions > Extend options menu > Run

I have the same problem. 

As a workaround i used report.updateSettings() with the new settings: "Extend option menu" after report = powerbi.embed().

...
var reportContainer = document.getElementById('reportContainer');
var report = powerbi.embed(reportContainer, config);

var newSettings = {
  extensions: [{
      command: {
        name: "extension command",
        title: "Extend commands",
        extend: {
          visualOptionsMenu: {
            title: "Extend options menu"}
        }
      }
    }
  ]
};

report.updateSettings(newSettings)
    .catch(function (error) {
        Log.log(errors);
    });

Ref:  https://microsoft.github.io/PowerBI-JavaScript/demo/v2-demo/index.html#
1) Embed > View mode > Run

2) Interact > Edit & Save > Enter edit mode > Run

3) Interact > Menu Extensions > Extend options menu > Run

How do I switch from editing view to reading view in power bi desktop without coding.