SS 6.2 Admin - page menu > level 4 problem

Questions
1

Silverstripe Version: 6.2

When opening a page from a certain level (below as great-grandchild-page) in the Admin Pages menu, the menu ‘closes’ all pages and shows only the domain.

-domain

  • page
    • child-page
      • grandchild-page
        • great-grandchild-page

I think it is a bug, just wanted to double-check if I missed a step somewhere as I am updating this page from version 5.3 to 6.2 in one go.