### Bug description

Unicode can be displayed in the body, but not in the title and headings

```
---
title: 青黑體
format: pdf
mainfont: "Noto Sans CJK JP"
---

## 青黑體簡體中文,ヒラギノ

青黑體簡體中文,ヒラギノ角
```

![unicode](https://user-images.githubusercontent.com/28039275/192415842-8b85b85f-8e35-459d-83be-98c73a4e1ecd.png)

os version

```
NAME="Ubuntu"
VERSION="20.04.4 LTS (Focal Fossa)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 20.04.4 LTS"
```

quarto version

```
quarto check                        

[✓] Checking Quarto installation......OK
      Version: 1.1.251
      Path: /opt/quarto/bin

[✓] Checking basic markdown render....OK

[✓] Checking Python 3 installation....OK
      Version: 3.8.13 (Conda)
      Path: /home/xx/anaconda3/bin/python
      Jupyter: 4.10.0
      Kernels: python2, ir, python3

[✓] Checking Jupyter engine render....OK

[✓] Checking R installation...........OK
      Version: 4.2.1
      Path: /usr/lib/R
      LibPaths:
        - /usr/local/lib/R/site-library
        - /usr/lib/R/site-library
        - /usr/lib/R/library
      rmarkdown: 2.16

[✓] Checking Knitr engine render......OK
```

### Checklist

- [X] Please include a minimal, fully reproducible example in a single .qmd file? Please provide the whole file rather than the snippet you believe is causing the issue.
- [X] Please [format your issue](https://quarto.org/bug-reports.html#formatting-make-githubs-markdown-work-for-us) so it is easier for us to read the bug report.
- [X] Please document the RStudio IDE version you're running (if applicable), by providing the value displayed in the "About RStudio" main menu dialog?
- [X] Please document the operating system you're running. If on Linux, please provide the specific distribution.
2022-09-27T02:23:06Z
zhchenyang
closed
Unicode cannot be displayed in headings and title
https://github.com/quarto-dev/quarto-cli/issues/2619