72x72 custom logo is now incorrect size as of 8.9 update
/admin/appearance still says that "Pages are optimized for a 72x72 px header logo." It looks like the pages are now optimized for a 36x36px logo. The help text should be updated, some scaling on the img tag might be helpful too as a 72x72 logo that was there in 8.8.x now looks absurd and blocks menu elements in 8.9.