Summary

Excel preview shows black screen in case the file contains specific type of hyperlink.

Steps to Reproduce

1. Attach sample1.xlsx to a page
2. Preview the excel file

Expected Results

The excel file is previewed correctly.

Actual Results

The preview shows black screen.

Notes

As far as I know, this bug can be reproduced in case that the hyperlink contains a round bracket "(". However, there seems to be more complicated rules.

• http://test/( ← This bug was reproduced.
• http://test/(test).html ← This bug wasn't reproduced.

Workaround

Remove the problematic hyperlink from the excel file.