Adding failed in rules

I have a content type with Field Collection of status log. What I want is:
Event: User clicks a button
Action:

1. add a new status (in Field Collection)
2. update a regular field in this host entity

I put adding a new status in a component. Tested the component, works great.

When I construct the rule, if I just add a new record in the Field Collection, works fine. BUT, when I put both tasks in the rule, the "Add a new status" task won't work anymore! Updating a regular field works fine.

Other notes:

1. If I add other type actions, like sending email, to the rule, they wouldn't impact the Field Collection action. Only when I want to update a regular field in the host entity, problem occurs.
2. I tried "Entity has field" and "Content is of type", including checking whether the data is passed over. Everything works fine,
   but as long as I have an action to update a regular field in the entity host, then adding new record in Field Collection will not work anymore.

I'd appreciate any advice...