example of problem
example.xlsx (application/vnd.openxmlformats-officedocument.spreadsheetml.sheet), 4.24 KB, created by apulbere on 2018-09-21 14:34:16 UTC
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Creator: apulbere
Created: 2018-09-21 14:34:16 UTC
Size: 4.24 KB

Attachment is not viewable in your browser because its MIME type (application/vnd.openxmlformats-officedocument.spreadsheetml.sheet) is not one that your browser is able to display.

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Attachments on bug 62753: 36159