I do not think that the bugs are related to mine. Both of those are related to behavior when you exit a child element, while the bug I am reporting is caused by letting go of the draggable without leaving the element. Here is a quick example:
Steps to reproduce:
1. Drag blue box up to the green child element (child should be yellow, parent is red)
2. Let go of the draggable blue box without leaving the child (child is green, parent is red)
3. Drag blue box up into parent without intersecting the child element (parend is red, should be yellow)
To reset the bug and start getting the correct behavior again (parent turns yellow on hover), drag blue box over the child again and then drag it back to the parent. This is because the setting causing the bug is only reset on the child 'out' handler, not on 'drop'.
I will be working on a fix for this and work on getting a pull request soon if it is approved quickly.