Cannot export Dictionary in 3.0

[willnationsdev]

Godot version:
Godot 3.0 20a52aa

Issue description:
According to this and this, the new debugger PR was supposed to add Inspector editing for exported Dictionary variables, but I can't seem to make this work.

Steps to reproduce:

1. Create any scene. Add a root node. Add a built-in script:

   export(Dictionary) var dict = {}

2. Examine the node in the scene. Click the right-arrow next to the Dictionary property. The DictionaryPropertyEdit won't have anything but a Reference section with the Script variable.

[net8floz]

I'd also like to know what's going on with this.

[ghost]

DictionaryPropertyEdit can only change value. The key is read-only. (for now)

godot/editor/dictionary_property_edit.cpp

Lines 42 to 46 in 6db60c0

	void DictionaryPropertyEdit::_set_key(const Variant &p_old_key, const Variant &p_new_key) {
	// TODO: Set key of a dictionary is not allowd yet
	return;
	}

It is supposed to work if you export Dictionary with some values, but there's another bug. Exported dictionaries are saved in the scene file as null.

Node.tscn:

dict = null

[torohaifisch]

any news on a fix for this issue?

[bojidar-bg]

It should be now fixed with the new inspector (though it is slightly crashy, but still works).

It is supposed to work if you export Dictionary with some values, but there's another bug. Exported dictionaries are saved in the scene file as null.

To be fixed by #19635 (the GDScript part of the changes).

[akien-mga]

That's fixed in the master branch.