[NTG-context] units: \spacedimensionstrue fails when using unit powers

I'm considering switching from my units macros to the units module. In doing that I'm trying \spaceddimensionstrue (found in the m-units.tex source), which is the most common convention in physics tables and books, rather than using \Times to separate quantities with a dot. But it seems not to take account of the exponent in the first unit when putting space between the first and second units. Here's a minimal example: \usemodule[units] \spaceddimensionstrue \starttext % this looks fine \startformula \Meter\Second \stopformula % this needs a thinspace after the superscripted 2 \startformula \Square\Meter\Second \stopformula \stoptext