about:tor page does not load on first start on Windows and browser is stuck in endless reload cycle

When testing the Windows nightly builds I got greeted with an error page on first start

     <title>&aboutTor.title;</title>
------------^

This happened with a 32bit de bundle and I can't reproduce this on Linux. Moreover if I open about:tor in a new tab it works. From the second start on the about:tor page is shown as well.

Furthermore, after the second session Tor Browser is stuck on an endless reload cycle when visiting websites and other extensions are broken.

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