Using shortcuts doesn't work on macOS Tahoe

I have a fresh install of scm breeze on macOS Tahoe, but none of the shortcuts appear to be working. Instead, they result in the following being printed to my terminal:

**Ctrl+x, c**
➜ " git_commit_all
dquote> "

**Ctrl+x, space**
➜ git_add_and_commit "
dquote> "

**Ctrl+x, v**
➜ " git_commit_all
dquote> "
➜  GIT_COMMIT_MSG_SUFFIX='[ci skip]' git_commit_all "
dquote> "