Setting custom editor and file associations doesn't work with FileZilla flatpak version

I am using FileZilla flatpak version `3.45.1` and getting the following error when trying to open a file or changing the custom editor:

`The file 'index.html' cannot be opened: The associated program (/usr/bin/code) could not be found. Please check your filetype associations.`

Even though I can run `/usr/bin/code` from the command line. It also worked in the old version, which was an `application directory` and not a `flatpak`.