I had just opened a thread regarding this exact issue (Sub items time tracking report)
I have up voted this request and I think it’s paramount this is dealt with from the Monday.com engineers. We use sub tasks to group our work and each sub task has a time tracking column. In order for us to report specifically on each employee and how much time they have used per sub task, the time tracking widget simply does not entertain the idea of sub tasks and while it is our understanding they are currently in the process of gradually rolling out sub filters to the widgets, I think it’s important to prioritise which widgets are widely used by the community and I would believe the time tracking column would be one of them.
I echo the sentiments in this thread and I would love for one of the Monday.com community staff to give us an idea if this has been looked at yet or have any indication when it will be looked at/delivered/up for beta testing?