While playing with granade launcher I have noticed that some terrain types do not work properly with it.

On planet surface terrain, although granades are aimed where I point them, if they do not meet enemy, or destructable obstacle on their way, they pass through ground level and explode (or plant as proximity mines) a few meters further. This allows even to attack enemies from longer range than theoretical max range of launcher.

Granades also seem to pass through some of grating of imperial interior and spire tops.