### Godot version

4.0.2.stable

### System information

Manjaro Linux 5.15.113-1-MANJARO

### Issue description

When I was trying to figure out #77725 i stumbled upon this:
![image](https://github.com/godotengine/godot/assets/14893831/364b89ce-00b2-4aef-a85e-f10c16936005)

pressing enter results in 
![image](https://github.com/godotengine/godot/assets/14893831/07d53b82-c919-4635-80e2-e1809b6bb11f)


It looks simmilar to #48436 , but it started happening to every code completion and I have absolutely no clue how it happened.

It happened after I moved(using shift+arrow keys to select, tab to indent and alt+arrow keys to move down)  the three dicts in the picture to within the function and added the dict 4.

### Steps to reproduce

Here's roughly what I did 
(might be slightly inaccurate, I was basically messing around to try and see the scope of $77725 when it happened)

1) create an empty script
2) declare a couple of dictionaries
3) declare a function
4) try out code completion within the function
5) create a lambda within the function and try 4) again
6) move the dictionaries' declaration within the function using keyboard shortcuts and try 4)




### Minimal reproduction project

N/A
Array arg;
		arg.push_back("some");
		signal_args.push_back(arg);
		SIGNAL_CHECK("symbol_validate", signal_args);
		SIGNAL_UNWATCH(code_edit, "symbol_validate");
	}
	memdelete(code_edit);
}
TEST_CASE("[SceneTree][CodeEdit] line length guidelines") {
	CodeEdit *code_edit = memnew(CodeEdit);
	SceneTree::get_singleton()->get_root()->add_child(code_edit);
	code_edit->grab_focus();
	TypedArray<int> guide_lines;
	code_edit->set_line_length_guidelines(guide_lines);
	CHECK(code_edit->get_line_length_guidelines().size() == 0);
	guide_lines.push_back(80);
	guide_lines.push_back(120);
	
	code_edit->set_line_length_guidelines(guide_lines);
	CHECK((int)code_edit->get_line_length_guidelines()[0] == 80);
	CHECK((int)code_edit->get_line_length_guidelines()[1] == 120);
	memdelete(code_edit);
}
TEST_CASE("[SceneTree][CodeEdit] Backspace delete") {
	CodeEdit *code_edit = memnew(CodeEdit);
	SceneTree::get_singleton()->get_root()->add_child(code_edit);
	code_edit->grab_focus();
	
	code_edit->set_text("");
	code_edit->insert_text_at_caret("test backspace");