cdk drag and drop - cdkDragDropped event not triggered

[pas2al]

Bug

What is the expected behavior?

The drop event cdkDragDropped should trigger the custom method

What is the current behavior?

The demo app for drag drop has two lists (todo and done). The items in the list are not updated from the cdkDragDropped event. The associated drop(event: CdkDragDrop<string[]>){...} method is not called.

What are the steps to reproduce?

I created an example with the exact same implementation like in the material2 demo-app.
https://stackblitz.com/edit/angular-material2-issue-eemhuq

I also tried it with the complete material2 repository. Cloned the repository and started the demo app using gulp serve:devapp. Same problem, like in the stackblitz example.

Which versions of Angular, Material, OS, TypeScript, browsers are affected?

See stackblitz example

Based on the changes introduced in #11864 by @crisbeto

[crisbeto]

It seems like our demo app is using the wrong events. The proper name for it is dropped.

[pas2al]

Ah, perfect. Found it in your source code. Thanks! Is there progress on the documentation for the cdk drag and drop? If you need any help i can start working on it. I am exploring your implementation.

[crisbeto]

I'll continue working on it a bit more over the next week, I was busy with other tasks this week. Also let's keep this issue open since it shows that the dragging is off when the page is scrolled.

[pas2al]

the dragging is off when the page is scrolled

What do you mean by that?

[crisbeto]

I mean that the logic that determines how the item should be sorted, as well as where to render the preview, seems to be thrown off when the page is scrolled down. I've submitted #12098 to fix it.

[pas2al]

@josephperrott What about the fix #12092 for the demo app?

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