When I open my project, none of my files are scanned unless I open them in the IDE. Even then, only the opened file is scanned. So, intellisense has no information about any classes, etc unless they are in already opened files. Am I doing something wrong?
This feature only works for PHP Projects - if you have PHP files in C# projects or any other, only opened files are recognized.
The latest update adds support also for "Open Folder" in Visual Studio 2019.