### Godot version

4.0beta14

### System information

windows 10, gles 3, nvidia graphics

### Issue description

on beta 14, you cannot drag anymore a node from the scene tree to the script editor to get the node path or the ```@onready``` var snippet

### Steps to reproduce

Using beta 14, try to drag a node from the tree inside the script editor and see the arrow cursor turn into a circular white and red stop sign icon.

Note that this happens even if the script belongs to the currently opened scene.

### Minimal reproduction project

N/A
ERR_FAIL_COND(p_highlighter.is_null());
	highlighters[p_highlighter->_get_name()] = p_highlighter;
	highlighter_menu->add_radio_check_item(p_highlighter->_get_name());
}
void ScriptTextEditor::set_syntax_highlighter(Ref<EditorSyntaxHighlighter> p_highlighter) {
	ERR_FAIL_COND(p_highlighter.is_null());
	HashMap<String, Ref<EditorSyntaxHighlighter>>::Iterator el = highlighters.begin();
	while (el) {
		int highlighter_index = highlighter_menu->get_item_idx_from_text(el->key);
		highlighter_menu->set_item_checked(highlighter_index, el->value == p_highlighter);
		++el;
	}
	CodeEdit *te = code_editor->get_text_editor();
	p_highlighter->_set_edited_resource(script);
	te->set_syntax_highlighter(p_highlighter);
}
void ScriptTextEditor::_change_syntax_highlighter(int p_idx) {