CenterContainer blocks parent from receiving drag and drop

[ForLoveOfCats]

Godot version:
Godot (Mono*) 3.2 Beta 5
*The reproduction project uses GDScript to demonstrate the issue

OS/device including version:
Manjaro Linux x86_64

Issue description:
When the mouse drag is released over a CenterContainer it prevents its parent from receiving the drag data.

Steps to reproduce:
See reproduction project + explanation

Minimal reproduction project:
DragAndDrop.zip
When dragging on the grey Panel the number 42 is given to Godot as the drag data. When it is released on the left side of the screen the HBoxContainer receives this and prints it. However when released on the right side of the screen the CenterContainer instead blocks it. The VBoxContainers on both sides of the screen do not exhibit this behavior.

[KoBeWi]

That's because your CenterContainer has mouse_filter set to Stop. When it's set to Pass (same as BoxContainers), it works correctly.

Although I wonder why CenterContainer's default is different. It's still a container.

[akien-mga]

Although I wonder why CenterContainer's default is different. It's still a container.

mouse_filter defaults to MOUSE_FILTER_STOP in Control, which Container and thus CenterContainer inherit.
BoxContainer and GridContainer seem to have local overrides to MOUSE_FILTER_PASS. The discrepancy is probably not intended.