🐞 bug report

Affected Package

Is this a regression?

Description

I binding an empty Array in template as below. And click the ADD button to make some changes. When I click the Rebuild button, app-level-1 component will rebuild(its ngOnInit function will be called). And I expect it always input an empty Array into the sub-component. Actually the binding data will be retained. As a comparison, the the binding data in other two component will be reset.

Even if I deepen the level componet, rebuild all of them, the binding data still here, so maybe it stored in the entire angular lifecycle.

I found out how bugs happen：

1. a component binding an empty Array in template.
2. push some data into Array.
3. delete the component. (even if delete its grandparent-componet)
4. build a component that is in the same place of Angular tree.

the new component binding a Array as the old component instead of empty Array.

🔬 Minimal Reproduction

🔥 Exception or Error

Nope

🌍 Your Environment

Angular Version:

9.1.11

Anything else relevant?

It happend in Angular 7