[Bug 50174] New: Microsoft Office 365 login page for activating Office is blank

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=50174

Bug ID: 50174
           Summary: Microsoft Office 365 login page for activating Office
                    is blank
           Product: Wine
           Version: 5.22
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: critical
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 68692
  --> https://bugs.winehq.org/attachment.cgi?id=68692
Screenshot of the blank login window

I have a Office 365 subscription. I visited https://www.office.com/ After
logging into that page, I am then allowed to download the OfficeInstaller.exe.

Selecting and downloading the installation file beforehand ensures that the 
Office installation is bound to the account during installation. The Office
products Excel, PowerPoint etc. are activated accordingly. Within the menus,
however, it is noticeable that you are apparently not logged in after all. The
button Log in appears where the name of the account should actually be. If the
subscription expires, the Office installation notices it. Hints appear that you
should use the subscription (activate it) again. If the subscription was
renewed from the Office.com site, the Office installation will not notice it.
If I open Excel, for example, I now have three options: Login, Buy, Enter key.
If I choose Login, a window opens where I can enter my e-mail address on a
Microsoft page. After entering it I should get to the next menu item where I
can enter my password. But the window there is empty. It is simply white.