Example of XSLX file showing the issue
DataTables example - HTML5 export buttons.xlsx (application/vnd.openxmlformats-officedocument.spreadsheetml.sheet), 18.61 KB, created by Allan Jardine on 2015-11-11 17:44:43 UTC
Creator: Allan Jardine
Created: 2015-11-11 17:44:43 UTC
Size: 18.61 KB

The attachment is not viewable in your browser due to security restrictions enabled by your Apache OpenOffice (AOO) Bugzilla administrator.

In order to view the attachment, you first have to download it.

Actions: View
Attachments on issue 126644: 85126