Bookmark on top when dragging bookmarks into a folder looks more like a bug rather than a change because when I right click on a folder and select 'Add site' it works correctly (bookmark on the bottom).
In 88 Developer the same issue, but in O78 for example, it works correctly (the both actions dragging and context menu's 'Add site' add bookmarks to the bottom)
*I think separate topic should be created regarding this issue because there's no crashes or rebooting.