If not, like the official, the extension falls back to use GET, and you may still encounter 414 URI Too Long errors. To make sure you can benifit from this update, make sure your plantuml server enables POST support.

The extension comes with a new include processor, you won't encounter include problems again.

The server render is now very recommended by this extension, since it's much faster and much easier to setup, while the major weakness has been improved: Rich PlantUML support for Visual Studio Code.