Penguin missile not working correctly?

I was testing the penguin missile a little bit and I realized that it is unable to lock ground targets.

I know it is a anti ship missile but still. tanks have a IR signature. it is really weird to me that it is entirely impossible for lock ground targets and not just it being really hard to lock them.

like it only gets a “ground lock” no matter how close i am to the target.

They changed that a while back, its useless against ground targets

It doesn’t lock any IR signature, the seeker is specific for ship type signatures.

Ingame its handled by the minimum target size, can track targets bigger than 40m

i hope they actually tell us that somewhere on the stat card or the wiki