The time tracking data from the Sub-task does not roll up in the Parent issue.

• In the below example, the work log of subtask STC-29 does not roll up on the STC-27 Task issue type time tracking field.
  
• Hence the Epic issues are also not summing up the time tracking data of the sub-tasks even though the Include subtasks is checked.

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• When the parent of the subtask is changed directly to Epic, only then do the time tracking data from the subtask is summing up in the time tracking field of Epic issues.
  In this case, I have an Epic STC-22 which has a direct subtask as a child issue STC-28, and when selecting the field Include subtasks, the time tracking data of sub-task value sums up in the Epic issue's time tracking field.
  

Hi Everyone,

I want to provide a quick update for this topic. this feature, rollup time tracking from sub-task to the parent issue, is being under consideration to be prioritised in the next couple of months. we will keep you posted with the updates. I know this has taken a while to build out, but rebuilding Jira issues is no small feat, so we very much appreciate your patience on this.

In the meantime, you can opt out of this new issue experience via your Personal Settings > Jira Labs section will have a 'new issue view' toggle to turn it on or off. We will not be disabling this opt-out option until we have rebuilt all the key features of the Jira issues experience you have come to know and love.

Regards,

Atlassian