mention that Flatpak doesn't currently work with CJK fonts

README.md

@@ -67,12 +67,12 @@ Platform-specific installation instructions are listed below. In addition to the
 
 ### Linux
 
-**Packages:** On Linux, Supersonic is [available as a Flatpak](https://flathub.org/apps/details/io.github.dweymouth.supersonic). (Thank you @anarcat!) Third-party packages are also available for Arch and Nix OS.
-
 **AppImage:** On the [latest release](https://github.com/dweymouth/supersonic/releases) page, you can download an AppImage package which supports any OS that can run AppImages. The MPV library is bundled in the AppImage.
 
 **(Debian) .tar.xz:** The.tar.xz builds from the Releases page support Debian-based distros. You **must** have libmpv installed on your system, and choose the correct release build (libmpv2 or libmpv1) based on which is available in your distro's package manager. On apt-based systems, run `sudo apt install libmpv1` (or libmpv2) if it is not already installed. To install the Linux release build, after ensuring the required libmpv is installed, extract the .tar.xz bundle and run `make user-install` or `sudo make install`.
 
+**Packages:** On Linux, Supersonic is [available as a Flatpak](https://flathub.org/apps/details/io.github.dweymouth.supersonic). (Thank you @anarcat!) Third-party packages are also available for Arch and Nix OS. Please note that the Flatpak package currently does not support CJK fonts as the sandboxing breaks font lookup.
+
 ### Windows
 
 Download the [latest release](https://github.com/dweymouth/supersonic/releases). You can choose between the installer, or a standalone zip file which can be extracted and run without requiring system installation.
@@ -102,4 +102,4 @@ To install the **downloaded .app bundle** from the [Releases page](https://githu
 
 ## Building from source
 
-Build instructions for Linux, Windows, and Mac are listed [here](BUILD.md)
+Build instructions for Linux, Windows, and Mac are listed [here](BUILD.md)