I have qtpfsgui 1.9.3 and Luminance HDR 2.3.1 installed on Mint and they load the same Fuji RAF file differently at least as far as the preview window is concerned.  Qtpfsgui looks fine - red flower is red in the preview window; however, Luminance presents the flower as blue.

I have not done extensive testing, but when Luminance saves to another file the results look normal in an image viewer.

This is probably cockpit error, but ... ?