Activity tab cannot be moved in Manage Page General Settings anymore

WP: 6.7.1
BP: 14.3.1
Theme : BuddyBoss with a custom child theme

Since we update to 14.3 we cannot change the Activity tab order in the manage Page general setting anymore

When we create a group, the default page is Activity.
Previously it was possible to change it to any other tab in Manage Page General Setting, but not anymore.
While I can change the place of the other tabs (Pages; Members, etc.) I cannot move the Activity any more, i.e. I cannot grab the Activity button while I can still grab and move the others.

If I edit an old group where I changed the tab default to something else than Activity, I can still change the other tabs but I cannot grab the Activity and therefore I cannot change its order.

Could someone help me on where to look at ? I’m clueless at this point.

I tried on Safari Google Chrome, Firefox and observe the same behaviour.

Thanks for your help

Dominique