Unfortunately, I wasn't able to reproduce this. However, before we continue too far, I would suggest upgrading or disabling the following third party add-ons to ensure they are not involved.
applications/easypopup/hooks/includeJSandCSS.php
applications/memberscountry/hooks/dispatcherFront.php
plugins/aedtousdconversion/hooks/aedtousd_patterns.php
applications/singledriveandwaitlist/hooks/OutputOverride.php
applications/drives/hooks/drivesData.php
applications/membersshop/hooks/MemberHook.php
applications/memberscountry/hooks/friendlyUrl.php
applications/membersshop/hooks/GroupHook.php