@jzillw If one is doing SCRUM "right" (not an easy thing) then this shouldn't be the thing
You either increase the sprint time if the tasks REALLY take that long OR if things are half done, they haven't been sized correctly during planning
Management tends to treat this as having something to hold against the team every two weeks but the idea is (supposedly) that the reason for the sprint is "protection against clients clienting"
Because every sprint turn is an opportunity to pivot [+1]