I am exeperiencing a strange bug in APP 1.077 when applying neutralizeBG in calibrated images

Everyting seems ok until, after calibration, i check visually the calibrated with neutralizeBG: instead of "equalizing" the RGB curves, the blue one becomes dominant in the hystogram, the sky background becomes blu, object on the image becomes yellow.

If i use the same masters (calculated with 1.077) and follow the same procedure on same lights with older 1.075, the problem disappear, and the overall nbg seems much better.

I check on three different pc (intel notebook and AMD+radeon GPU) and all GL settings, but with same result. The effect is present also in the saved tiff / jpeg.

Am i doing someting wrong in my procedure? There is something "wrong" in my raw files?

Here an example with two images, same target of two different night, same equipment and exposure time.

M86-1-60-3-C0.fit = GOOD FRAME with 1.077

M86-1-60-1-C0.fit = BAD FRAME with 1.077

M86-1-60-3-C0.fit = GOOD FRAME with 1.075

M86-1-60-1-C0.fit = BAD FRAME with 1.075