EditorPlugin.edit is not called when EditorPlugin.handles() returns true for objects inside collections

[AnidemDex]

Godot version

v3.4.stable.official [206ba70]

System information

Windows 11 x64

Issue description

If you're making a plugin and you try to edit a resource that you plugin handles, you'll notice that your edit() function is not called and that the array inspector is not opening the default editor.

As you can see in the gif, handles() method is called, but edit() is not.

No idea if those lines are related to it:

godot/editor/editor_properties_array_dict.cpp

Line 206 in 6fac314

void EditorPropertyArray::_object_id_selected(const String &p_property, ObjectID p_id) {

godot/editor/editor_properties.cpp

Line 2428 in 6fac314

bool EditorPropertyResource::_can_use_sub_inspector(const RES &p_resource) {

godot/editor/editor_plugin.cpp

Line 650 in 6fac314

bool EditorPlugin::handles(Object *p_object) const {

Steps to reproduce

1. Create a plugin
2. Make it handles Resource
3. Create the edit() function and put a print there
4. In any other script, export an array and fill it with resources, the edit() is never called.

or

1. Download the reproduction project
2. Enable test_plugin

Minimal reproduction project

handles_test.zip

[Abdera7mane]

I could replicate the issue with Arrays and Dictionaries key/value, actually it appears to be the case with editing any object inside a sub-inspector and I believe this is related to #52984.

[AnidemDex]

This issue is still true for Godot 4 (since Godot 4 to v4.2.beta5.official [4c96e96]), but for objects inspected in node properties:

It's called for resources and resources inspected in resource properties 🤔

Should I open a new issue?

[YuriSizov]

Should I open a new issue?

I think so, yes. Relevant bits have been reworked quite a lot in 4.x