I am currently in a sprint (two weeks) where the designer is tasked with defining the requirements and UX of a particular user story.
In the same sprint, I am to implement this design. During sprint planning, I had to take a wild guess as to how long this undefined user story would take.
Today I finally received the design. Unfortunately, the design is incomplete/vague and is more akin to a client's requirements than a design. However, from this, I can still see that I have not nearly estimated enough.
To make matters worse this is not the first time. In the last sprint, the exact same thing happened. I flagged it in our retrospective and the scrum master did not have an answer of how to solve this, instead of saying "that's just development for you". Ironically he gets annoyed if the burn down is not on target...
Now I am going to have to ask/work with the designer to get his job done. This is going to hold me up as I have completed all my other tasks.
So my question is