Big knowls on homepages seem to be allowed to move under the properties box (even if the content stays where it should be)
See for example:
https://www.lmfdb.org/EllipticCurve/4.4.2304.1/1.1/a/
Perhaps solving this could be part of a bigger project to make the CSS on the site more idiomatic, and ensure that the LMFDB (and knowls in particular) follow best practices for web development.