In 4.5.0 alpha installations i get the following problems
In Webin interface.
Using Drag&Drop when sorting content does not make any action

In Ezfow interface
Editing the frontpage, dragging and dropping blocks does not work, when o click in one of the block's it becames locked to mouse pointer, and you cant click on any other block.

Steps to reproduce

Webin

1. Create a Folder with 3 subfolder's
2. Open Parent folder and click the sort button on toolbar
3. Place the sort order to priority
4. Try using drag and drop to order sub-folder's

Flow

1. Edit fontpage
2. Add any type of block to frontpage
3. Order it using drag&drop