This feature is available in Catalyst, Enterprise, and Ultimate editions.
This can happen if someone has entered a negative value for Effort. The graph will not display negative totals. We've seen this in the past where someone has backed out Effort that was recorded in a prior sprint. The negative entry counted in the current sprint and was enough to push the person's total for the sprint below zero.
A quick way to check is to click the My Home icon > My Work page. Use the dropdown there to look through various team members. The Member Summary section on the right will show you the total for the selected person. A negative Done value for any member may trigger this case.
Try these things to fix it:
- Ask the member correct the negative entry made if in error. Perhaps the "backing out" should have been done in a prior sprint.
- Try splitting incomplete workitems should be used when completing the prior sprint instead of simply moving the item forward to the next sprint.
- Wait. If no change is made, the graph will reappear once the member's total in the current sprint climbs back into the positive range.
As a workaround, you can temporarily enter a positive entry for the member with the negative total to get them back into a positive total for the sprint.