I am facing a really odd issue with managing my virtual machines using Vcenter, for some reason I cant seem to manage the attached hard-disks added to the VM and cannot add new hard disks as well.

Although when i connect to the Esxi host directly it works. So something is not right with my Vcenter. I have rebooted it with no luck! This is a 7.0 VCSA appliance.
I tried creating an empty shell for a test VM and even for that I face this issue with that VM not having anything installed. I can edit the CPU and the Memory but not the hard disk info which is really odd...
My VC is on the build 18455184 and Esxi is VMware ESXi, 7.0.2, 18426014