After some experimentation, I believe the Japanese on the website used to be displayed for me in ‘Yu Gothic’ and now all I see is ‘Meiryo’. The difference is especially noticeable with ふ and り. Can I change it back somehow without outright deleting the ‘Meiryo’ font?
Related sidenote: Is there a way to get Japanese Language Pack to work properly with a QWERTZ keybord layout? I keep typing ず instead of ゆ and vice versa.