Supply spikes Attack Drones (White Giant)

I just noticed the supply fairy ruining the demand for attack drones on White Giant...

Normal supply: ~3000-4000

Artificial supply:

November 2033: 17138
March 2834: ~12200
July 2834: ~ 22800
November 2834: ~28600

Previously there was a deep red demand for this product. Now there is a surplus of ~3000 units.
I recently read GMs are not adding supply to change a shortage to a surplus? Looks like that is not true...

nope they buy lots of drones cheap then sell back high

Also look at the sudden supply of Construction...

That is most likely not the supply fairy.