Re: backward-sexp throws scan-error "Unbalanced parentheses", but forward-sexp works

[ndame]

> I cannot yet replicate the problem knowingly, it just occurs every once in a 
> while.

Now I can replicate the problem with my own config, but not with -Q

Which is strange, because I don't use any package for changing the font locking 
for emacs-lisp-mode, so it must be some other package doing this. I'll keep 
looking and post if I have more info.