If you are certain this isn’t because of a bad config somewhere, maybe upgrading to tests-passed would be a good option if you’re wary of beta?
My interpretation of the page you’ve linked to is that tests-passed is more bleeding edge than beta.
If the consensus is that this has been fixed in a version between 1.8.7 and 1.9.0 then I will be patient. It isn’t ideal having the logo broken but, from my perspective, it is preferable to running our production site on anything other than the stable branch.
Thanks, @jomaxro, for confirming you can’t reproduce it on the latest version.