Apparently I broke them in commit 4e8ab80c66 ("tmux: Fix edge cases
in paragraph text-object") by adding the comments. Through them the
bindings were not set in place since the binding stopped with the
comment (I guess?). Weirdly I do not get an error message and the
default bindings stay, so I am not sure what exactly happens. This could
also be due to a version change from 3.3a to 3.4.
Fix the bindings by starting a code block instead of just escaping the
newline.
Do this also everywhere else to prevent errors in the future.