> The only ts-mode where the 'sexp' thing is well defined is c-ts-mode with
>
>   (sexp (not ,(rx (or "{" "}" "[" "]" "(" ")" ","))))
>
> All other ts-modes contain desperate attempts to emulate the
> traditional behavior to navigate symbols with the 'sexp' thing.
> But symbol navigation is now implemented as the default behavior.
>
> So these ts-modes should be fixed based on the pattern in c-ts-mode.
> Then after toggling to the sexp mode they will navigate all ts nodes
> except nodes that define boundaries.

Ok, here is more complete patch with a small improvement in c-ts-mode,
and using the same pattern in java/css/ruby-ts-mode: