Drag'n'drop with nested structures

[joergplewe]

Dear admired developers,

following the d'n'd example https://pixijs.com/examples/events/dragging I extended the structure a bit from

app.stage -> bunny1
app.stage -> bunny2

to

app.stage -> container1 -> bunny1
app.stage -> container2 -> bunny2

With that, I can drag bunny2 over bunny1, but bunny1 is blocked by bunny2. The goal is to be able to group many bunnies in containers.
I'd like to understand why this is the case.

I created a playground to show the effect: https://www.pixiplayground.com/#/edit/uVItc9zUHsl-py0JOZFJM

Hope for help!