I see an incorrect display of task execution time.

For example, 

This run spent:

• 11 min waiting;
• 13 min build duration;
• 13 min total from scheduled to completion.

In fact, the build was executed in just 2 minutes, but i see 13 minutes (waiting + exec time).

JSON contains correct timings:

"buildableTimeMillis":702663,"buildingDurationMillis":832158,"executingTimeMillis":129299.