Vertical lines for scrollbar visible in desktop add-in when add-in section is resized

Question

When i resize the add-in section in my excel desktop app these vertical lines are visible where the previous position of scrollbar was present. It works fine for the online excel spreadsheet issue only occurs in desktop application.

I have tried clearing cache for excel as well as changing the settings for add-in's in excel.

Any and all advice and assistance very gratefully received.

Thanks

Answer 1

I had the same problem in a Word add-in. I fixed it by adding a background-color css rule to the stylesheet. I.e. main.css:

body {
  background-color: white;  /* required to avoid vertical lines on window re-size */
}