1.6.9.651 osx x86_64: pixelmath gui behavior

[pfile]

if i enter an expression into the RGB/K box first, and then i go down and toggle either "rescale" or "create new image", the expression in the RGB/K box is erased and i have to enter it again. that's kind of annoying...

[pfile]

i should add that this only happens if i directly type the equation into the K/RGB box, rather than constructing it with the view/function explorer thing.