Animation on query :leave does not apply on lazy-loaded children components

[gc23]

I'm submitting a...

[ ] Regression (a behavior that used to work and stopped working in a new release)
[x] Bug report  
[ ] Feature request
[ ] Documentation issue or request
[ ] Support request => Please do not submit support request here, instead see https://github.com/angular/angular/blob/master/CONTRIBUTING.md#question

Current behavior

query(':leave' animation has no effect on lazy loaded child components. The component simply disappears

Expected behavior

The leave query should take effect on lazy loaded child components. I appears that it was affected by changes made in 5.0.4
In 5.0.3 animation is happening, however with some sort of a slight delay

Minimal reproduction of the problem with instructions

https://embed.plnkr.co/Nfj70L0RzFnAT8e4eC2I/
Animation on routing is in place. Notice that the lazyloaded components animation is not triggering onLeave

What is the motivation / use case for changing the behavior?

Environment

5.0.4

Angular version: X.Y.Z


Browser:
- [x] Chrome (desktop) version XX
- [ ] Chrome (Android) version XX
- [ ] Chrome (iOS) version XX
- [ ] Firefox version XX
- [ ] Safari (desktop) version XX
- [ ] Safari (iOS) version XX
- [ ] IE version XX
- [ ] Edge version XX
 
For Tooling issues:
- Node version: XX  
- Platform:  

Others:

[matsko]

@gc23 I can see the issue. Looking into it. Thank you.

[ArnisLupiks]

@matsko is there any update on it?

[gc23]

This is still an issue on 6.0.0-rc.0

stackblitz provided:
https://stackblitz.com/edit/angular-g35ivq