Cannot edit CodeMirror or Ace in a taskpane of an add-in in Excel for Windows
问题 I just realized that we cannot modify texts in CodeMirror or Ace in a taskpane of an add-in in Excel for Windows. I have made a test html page with this code, and link it to a manifest file of an Excel add-in. It works well in Excel Online (in Chrome and IE), Excel for Mac. However, in Excel for Windows, 1) textarea works well; 2) We could put the focus on CodeMirror, whereas we can NOT type anything; 3) When we put the focus on Excel then back on Ace, we can NOT type anything. I have not