动词mark的意思理解？

CNN:

《The history and future of ice cream》

That does change the fundamentals of how we work as a business. 

But there's one obstacle that's marked ice cream makers since the industry's earliest days. 

How do you sale the icy delight when it's cold outside ?

Unilever thought that home delivery and marketing to the living room sofa was the way ahead.

that's marked 是that has marked 还是that is marked ?!  这里的mark 的意思是呢？

But there's one obstacle that's marked ice cream makers since the industry's earliest days. 
网友没看见 marked 后面的宾语吗？提问题之前先好好想想。

mark 在这里可以理解为“妨碍，困扰”，ice cream makers 为宾语。