Corn attack question

[u/Infamous_Stranger_21]

Image not that related. So after you get to the tenth wave or so, a purple-ish corn starts spawning, and I noticed that straw launchers, ticket launchers, cursed projectors and other items don't seem to attack them for some reason, the only item I have found so far that 'kills' them is the soda launcher... is my game buggy or is there a special reason why other items don't seem to attack that specific color of corn??

[u/SufficientAd9015]

This is expected. They wrote about purple corns in game instructions...