error in latex()

[Stan Schymanski]

Dear all,

I think that I found an annoying bug in latex. In a notebook cell,

automatic_names(True)
latex(exp((298*S_j - H_j)/(298*R_m)))

gives

e^{\left(\frac{-H_{j} - 298 \, S_{j}}{298 \, R_{m}}\right)}

The sign of 298 S_j is reversed!!

Actually, is there a way to latexify an expression before it is
evaluated by sage? I find that the ordering of expressions that sage
applies not very convenient for display at times.

Thanks for your help!

Cheers
Stan