Drawing a Serialized property with custom PropertyDrawer which draws ReorderableList causes rendering issues in the said list. The issues are:
- Dragging one element of the list makes it transparent
- Dragging animation does not complete if mouse is not moved past the boundaries of the list

To reproduce:

1. Open attached project
2. Select ListTest object
3. In the Inspector drag Element 1 above the Element 0
4. Observe the behaviour of elements in the list

Expected: Drawing ReorderableList in custom PropertyDrawer does not make elements of the list transparent and the dragging animation should end as soon as draggable object is in its position.

Actual: Drawing ReorderableList in custom PropertyDrawer makes elements of the list transparent and dragging animation does not complete if mouse button is still held down but dragged element is in its position.

Reproduces in 5.5.2p4, 5.6.0f1, 5.6.0f2, 2017.1.0a6.