I use the Dark theme on the desktop website. I don't do a lot of mail, so I can't say when it broke, but the mail inbox is now unreadable if I select the Dark theme. The margins and menu are actually the Light versions, and the message list is grayed over. It looks as expected if I switch to Light theme.
I assume this is a style sheet issue. If the Dark theme works for other people, any ideas what I'm doing wrong?
I use Chrome on Windows 10, both up-to-date.