I found several threads containing “complaints” that LibreOffice Draw had no fullscreen function (those were from releases ages ago)… but still on Version: 5.3.0.3, there’s still no fullscreen on Draw. There’s a feature request reported way back June 2012 and up until now, it’s still on NEW status.
I’m curious why this is not treated by LibreOffice as an important feature. I know there’s Impress and all but Draw is very much the same as Impress and more importantly almost ALL counterparts of LibreOffice Draw has this feature.