Drag and drop reordering pages sets status to modified; not reflected in primary CMS actions

[robbieaverill]

Version: SS 4.3.0-rc1 (in CWP 2.2.0-rc1 context)

• Create a page
• Publish it
• With the edit screen still open, drag and drop it in the site tree to a new position

Expected: the page status should be changed to modified in the tree and in the CMS primary action buttons

Actual: the page status is updated in the tree but not in the CMS primary actions buttons (remains "Published")

Refreshing the page updates the Published button to Publish correctly.