Thanks I finally found it and I have been adding everything I could think of into the compiled code section. Unfortunately the debugger is still unusable for me. Besides being very slow it appears to throw an exception in various modules. Currently it get’s stuck in JLD2, but I’ve been unable to create a small example file to isolate this problem.
The stand alone Debugger module still works fortunately. This is a definite downgrade from Juno functionality, which also is much slower than the Debugger module, but actually usable, unlike the current state of the VSCode debugger.