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

[ndame]

> 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.

Apparently, aggressive-indent-mode is the culprit. I can replicate the problem 
with -Q and aggressive-indent-mode turned on. Which is strange, because AFAIK 
aggressive-indent-mode only uses sexp moving and indent functions.

Should I report this to the mode author or emacs?