two elements cannot both have on page load actions

I added element one, Action - Behavior: fadeOut 4000ms, Execute on page load: Yes
2 Interact > it worked
3 added element two, Chained Actions - Drop 4000ms, fadeOut 4000ms, Execute oh page load: Yes
4 Interact > no actions worked
5 Removed element 2 action 2 fadeOut
6 Interact > no actions worked
7 Removed element 2 action 1. Now only single element with single onPageLoad action
8 Interact > it worked

Expected: All elements with onPageLoad actions will have their actions executed
Actual: Adding another element with etc etc breaks all onPageLoad animations.

So apparently we must put all actions we want to run on page load into a single chain. Chains are unstable, I'd rather not use chains.