"Change job priority" in NBU 7.6.1.1

Hi,

I upgraded the NBU to 7.6.1.1 from 7.5.0.4. All is fine but very important option for administrators disapeared from context menu in Activity Monitor. Not exactly disapeared but is grayed out:

It is strange and very inconvenient for admins. 

I found nothing about this option that is not available in this release.

Any suggestions?

Regards 

Madej