Have you made a bug report?
With the previous Kubuntu installation, the VLC wouldn't fully close.
It would show up in the list of processes and also in the tray.
Turned out it was a common bug and I had to manually kill the process using flag -9.
It got fixed in the current version.
There are small problems rampant with desktop Linux distros that get in your way.
I have been using Linux as my daily driver since four years ago.
You can try and compare apple to Linux like that if you want but it's like complaining it's apples fault for docker on Mac sucking.
Have you made a bug report?