title: Google Sheets Script Editor Toast feature onFormSubmit Trigger not popping up
body: <p>The line of code             </p>
  
  <pre><code>SpreadsheetApp.getActiveSpreadsheet().toast("Message", "Title");
  </code></pre>
  
  <p>gives a toast when executed. However, when placing it in a program with a form submit trigger, the toast does not pop up in the spreadsheet. </p>
  
  <p>I have played around with this for hours and I believe this error is on Google's part. No errors occur when executing the code; the only problem is the toast not popping up.</p>