It seem like there is an (unwanted) difference between the latex() command and the newly introduced "Copy as LaTeX" in handling of \left and \right delimiters. A trivial example

>latex(sin(b/a));
\sin \! \left(\frac{b}{a}\right)

but if I instead use the new "Copy as LaTeX" command I get the result

\sin(\frac{b}{a})

These should of course be the same and I consider the first one to be the better conversion. It seems a very strange problem since it surely must be the same library routine that does the conversion in both cases? From a small set of examples I tried on it seem that the "Copy as .."  command never uses \left and \right which in several cases is absolutely necessary to get acceptable result.