I fount that [Execute Workflow] not executing as expected when trigger node is present in child workflow.
It only executes the start node instead of the trigger node.
Hi @4blacktea, welcome to the community 
This is actually the intended behaviour - the Start node is the entry point for workflows started by Execute Workflow.
You can however connect both the Cron trigger node and the Start node from your screenshot to your HTTP Request node like so:
Your workflow should then run fine whether its triggered by either node. Give me a shout if you run into any trouble here.
