Items in icker preserves can still catch fire from lightning

Lightning can strike an item in icker causing it to catch on fire. This item can still be picked into the inventory.

Everything seems to be fine (lol) at this point with the item in inventory but causes constant fire damage to the player. The item can then be returned to the icker where its sprite is once again on fire. These two actions can be repeated. And the item seems to burn for a considerable amount of time (it was a stack of potatoes in my case). 

It eventually burns completely and drops ash from the icker preserve.