### 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
tl->set_horizontal_alignment(HORIZONTAL_ALIGNMENT_LEFT);
						}
						Point2 match_pos = Point2(code_completion_rect.position.x + icon_area_size.x + theme_cache.code_completion_icon_separation, code_completion_rect.position.y + i * row_height);
						for (int j = 0; j < code_completion_options[l].matches.size(); j++) {
							Pair<int, int> match_segment = code_completion_options[l].matches[j];
							int match_offset = theme_cache.font->get_string_size(code_completion_options[l].display.substr(0, match_segment.first), HORIZONTAL_ALIGNMENT_LEFT, -1, theme_cache.font_size).width;
							int match_len = theme_cache.font->get_string_size(code_completion_options[l].display.substr(match_segment.first, match_segment.second), HORIZONTAL_ALIGNMENT_LEFT, -1, theme_cache.font_size).width;
							draw_rect(Rect2(match_pos + Point2(match_offset, 0), Size2(match_len, row_height)), theme_cache.code_completion_existing_color);
						}
						tl->draw(ci, title_pos, code_completion_options[l].font_color);
					}
					
					if (scroll_width) {
						Color scroll_color = is_code_completion_scroll_hovered || is_code_completion_scroll_pressed ? theme_cache.code_completion_scroll_hovered_color : theme_cache.code_completion_scroll_color;
						float r = (float)theme_cache.code_completion_max_lines / code_completion_options_count;
						float o = (float)code_completion_line_ofs / code_completion_options_count;
						draw_rect(Rect2(code_completion_rect.position.x + code_completion_rect.size.width, code_completion_rect.position.y + o * code_completion_rect.size.y, scroll_width, code_completion_rect.size.y * r), scroll_color);
					}
				}
			}
		} break;
		case NOTIFICATION_DRAG_BEGIN: {
			cancel_code_completion();
		} break;
		case NOTIFICATION_MOUSE_EXIT: {
			queue_redraw();
		} break;
	}
}
void CodeEdit::gui_input(const Ref<InputEvent> &p_gui_input) {