Under what situations will the creeps be immune to tower debuff?
 
	 
 
	I just had a game where a wave of bulky creeps which my towers stacked 30 napalms on them and yet my dmg dealt was still 400
 
	The next wave was shielded but their shield was inactive, I still did not receive additional dmg from napalms.
 
	So I instantly died.
 
	 
 
	Is this intended or a bug?