Zoom/annotation tools not displaying on adding dicom-microscopy extension?

Hello. I am trying to use ohif viewer with orthanc server for WSI images. By adding dicome-microscopy extension, images are successfully displaying. But the zoom/annotation and other tools are no longer available after adding dicom-microscopy extension. How to get default toolbar back with microscopy extension?

I have the same problem. I load WSI but no toolbar, zoom and measures are displayed.

Some help would be appreciated.

Kind regards.