Bitbucket issue's link, pasted to Excel, works incorrectly (BB-10958)

When a link to a Bitbucket issue is pasted to Microsoft Excel (texted MS Excel 2010 Pro) to one of its cells, formatted as link and then clicked...

it redirects user to a login screen, while user is already logged-in:

This may be Excel-related issue, but you might want to investigate it.