[1.4.3528 Biotech] Waster Pollution Stimulus 120% movement buff stopped working

[Kaballah]

I know this feature was working at release time and for some time after, but as of right now this specific bonus isn't working.  No mods enabled, starting a fresh colony with a Waster pawn, rolled a new world, embarked on a polluted map tile, walk pawn over some polluted soil and while the other buffs seem to apply correctly, the movement buff does not.