Task dependency not honored (Agent OS 2.0)

[hakin19]

I have seen the subagents work on parallel on tasks that actually had dependencies to tasks that were not completed yet. Specifically, I had linear dependency:
task group 6 (depends on task group 5)
task group 7 (depends on task group 6)
task group 8 (depends on task group 7)
task group 9 (depends on task group 8),

And the subagents worked on task group 6, 7, 8 and 9 in parallel.