Is this a bug with Mordekaiser's ult or is a wanted feature?

If u use a delay ult on Morde, like Vlad's ult or Urgot or Zed, and he ults after you, the effect of ur ult disappears. Death mark from Zed ult doesn't prock, the execution from Urgot's ult doesn't prock, and so on. Is this a bug?
Best New

We're testing a new feature that gives the option to view discussion comments in chronological order. Some testers have pointed out situations in which they feel a linear view could be helpful, so we'd like see how you guys make use of it.

Report as:
Offensive Spam Harassment Incorrect Board