### 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
CHECK(code_edit->get_line(15) == "\tvar pos = get_index() - 1");
	CHECK(code_edit->get_line(16) == "\tprint(\"Make sure this exits: %b\" % pos)");
	
	code_edit->select(0, 0, 1, 2, 0);
	code_edit->select(3, 0, 4, 2, 1);
	code_edit->select(16, 0, 17, 0, 2);
	code_edit->set_caret_line(1, false, true, 0, 0);
	code_edit->set_caret_column(2, false, 0);
	code_edit->set_caret_line(4, false, true, 0, 1);
	code_edit->set_caret_column(2, false, 1);
	code_edit->set_caret_line(17, false, true, 0, 2);
	code_edit->set_caret_column(0, false, 2);
	code_edit->duplicate_lines();
	CHECK(code_edit->get_line(1) == "extends Node");
	CHECK(code_edit->get_line(2) == "extends Node");
	CHECK(code_edit->get_line(3) == "extends Node");
	CHECK(code_edit->get_line(4) == "");
	CHECK(code_edit->get_line(6) == "\tvar a := len(OS.get_cmdline_args())");
	CHECK(code_edit->get_line(7) == "func _ready():");
	CHECK(code_edit->get_line(8) == "\tvar a := len(OS.get_cmdline_args())");
	CHECK(code_edit->get_line(9) == "\tvar b := get_child_count()");
	CHECK(code_edit->get_line(20) == "\tprint(\"Make sure this exits: %b\" % pos)");
	CHECK(code_edit->get_line(21) == "");
	CHECK(code_edit->get_line(22) == "\tprint(\"Make sure this exits: %b\" % pos)");
	CHECK(code_edit->get_line(23) == "");
	memdelete(code_edit);
}
} 
#endif