Came in here to answer this, but see this kind user already did. Thank you! Great to see people helping eachother.Hi,
I believe what you want is available in the settings.
Go to tools -> preferences -> interface and uncheck the "resize interface to video size" option.
Not sure what happened to this, I will ask around.aaronwang put some effort into coding this and got a working solution: https://trac.videolan.org/vlc/ticket/824#comment:9