Implementing a full-screen mode that only exists in 10.7 certainly isn't a showstopper bug. Even the original reporter (a Mac user) called this a "low priority

Implementing a full-screen mode that only exists in 10.7 certainly isn't a showstopper bug. Even the original reporter (a Mac user) called this a "low priority". Saying LibreOffice "has not found its rhythm" and using a tiny feature request like this as an example is a bit silly.