Recent zsh-syntax-highlighting breaks auto-fu

[PythonNut]

As of commit https://github.com/zsh-users/zsh-syntax-highlighting/commit/7e6d960a08dfc7f48d8f3d658db208b0fdee7aad, auto-fu/pu and auto-fu/next both break self-insertion, among other things, with the error:

No such shell function self-insert-by-keymap