### Godot version

master ([06ccbfe](https://github.com/godotengine/godot/commit/06ccbfe8eec6e840db3df2360dc2804386f940b8))

### System information

PopOS 22.04

### Issue description

Sometimes the doc page is broken when the engine is closed and then restarted.
Closing the doc and opening it again fixes it.

![2023-05-27_22-15](https://github.com/godotengine/godot/assets/3624853/ed202a55-03e8-420a-bc1c-ccfc7f7cd02a)


### Steps to reproduce

- Open a documentation page for any node
- Restart Godot

### Minimal reproduction project

NA

EDIT : Added the commit hash @Calinou 
add_text(String::chr(0x2027));
			pos = brk_end + 1;
		} else if (tag == "fsi") {
			add_text(String::chr(0x2068));
			pos = brk_end + 1;
		} else if (tag == "pdi") {
			add_text(String::chr(0x2069));
			pos = brk_end + 1;
		} else if (tag == "zwj") {
			add_text(String::chr(0x200D));
			pos = brk_end + 1;
		} else if (tag == "zwnj") {
			add_text(String::chr(0x200C));
			pos = brk_end + 1;
		} else if (tag == "wj") {
			add_text(String::chr(0x2060));
			pos = brk_end + 1;
		} else if (tag == "shy") {
			add_text(String::chr(0x00AD));
			pos = brk_end + 1;
		} else if (tag == "center") {
			push_paragraph(HORIZONTAL_ALIGNMENT_CENTER);
			pos = brk_end + 1;
			tag_stack.push_front(tag);
		} else if (tag == "fill") {
			push_paragraph(HORIZONTAL_ALIGNMENT_FILL);
			pos = brk_end + 1;
			tag_stack.push_front(tag);
		} else if (tag == "left") {
			push_paragraph(HORIZONTAL_ALIGNMENT_LEFT);