[BUG] Incorrect range signalling

[r3dfx]

Output Luminance stays checked (I set up PC levels), but after some time it stops worlking correctly: I have to manually check and uncheck box to override output parameters because it shows TV luma, despite Output Luminance pc being checked

I'm aware that level signaling does not affect actual levels, but Vapoursynth's Levels can't override for some reason output luminance signalling even if I explicitly tell it to use full range...