title: Cannot share an autoopen-tagged document in read-only mode
body: <p>I have an Excel file in my OneDrive, I want to create a URL link such that:</p>
  
  <p>1) when my colleagues open the URL in a browser, it could open the file in Excel Online in the <strong>read-only mode</strong>,</p>
  
  <p>2) and the task-pane of Script Lab is auto-opened.</p>
  
  <p>I have followed <a href="https://github.com/OfficeDev/Office-OOXML-EmbedAddin" rel="nofollow noreferrer">this</a> to tag my document, then uploaded it to OneDrive. Then, I used <code>Share</code> to share this document in OneDrive as follows. Note that I well set "Anyone with the link can view"</p>
  
  <p><a href="https://i.stack.imgur.com/o16qa.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/o16qa.png" alt="enter image description here"></a></p>
  
  <p>Here is the link: <a href="https://1drv.ms/x/s!AmAcI5jpNEmng2vYPFkfDRVMDFCP?e=F1I824" rel="nofollow noreferrer">https://1drv.ms/x/s!AmAcI5jpNEmng2vYPFkfDRVMDFCP?e=F1I824</a></p>
  
  <p>My tests showed that for an authenticated user, the link does trigger the auto-open of the task-pane of ScriptLab. Though, for a non-authenticated user, the link does NOT trigger the auto-open, it is a <a href="https://stackoverflow.com/a/54935374/702977">known bug</a>, which has not been fixed.</p>
  
  <p>However, my tests showed that a non-authenticated user can not edit the file (which is expected), <strong>whereas another authenticated user can well edit the file, this is not what the read-only mode is supposed to do</strong>.</p>
  
  <p>Additionally, my tests showed that a non-autoopen-tagged file does not have this problem; the read-only mode works well.</p>
  
  <p>Does anyone know what is happening here, is it a bug?</p>
  
  <p>Is there any other way to share a document (by Microsoft Graph?) such that it could 1) trigger autoopen and 2) be read-only? </p>