Thanks first for your great work.
I’m not sure if it’s a bug or a question, but packages are not fitted to their smallest size when included. Previously I’m quite sure this will work perfectly.
The problem is that when included in the \ISA\LL\Metamodel\Metamodel.puml file, the ISA\LL\Concepts package is still big as if the hidden classes were present.
You will find joined the source code I use. In the out directory there is the PNG files.
This is true either when I use VSCode or directly plantuml.1.2018.9.jar. I have graphviz-2.38.
Can you help me ?