Its excel file shows the bug.
Bug with page break.ods (application/vnd.oasis.opendocument.spreadsheet), 11.58 KB, created by Ahmed Elsayed on 2016-07-20 11:31:59 UTC
(hide)
 
Creator: Ahmed Elsayed
Created: 2016-07-20 11:31:59 UTC
Size: 11.58 KB

Attachment is not viewable in your browser because its MIME type (application/vnd.oasis.opendocument.spreadsheet) is not one that your browser is able to display.

Download the attachment.

Actions: View
Attachments on bug 101033: 126322