Unable to choose SATA when creating new VM

I am running RHV on Red Hat 8.4 in a lab environment. At one point the option to choose SATA for disks disappeared although I am unsure when exactly. It was there, I have installed VM's with it where Virtio(-scsci) is unavailable.

However, when I wanted to create a new VM the other day, I noticed SATA wasn't available anymore. I tried several things:
- change the profile
- pick a different template
- attach an existing disk instead of create new one
- change the Operating System to be installed

And lastly, I edited one of my older, existing VM's to see if I can attach a SATA disk instead ... and there is was ... the option was there to set a SATA disk!

As far as I can see, everything is the same, same chipset, cpu type. The older VM isn't that old, its a few months at most but it was created a few patches and updates ago.

Any ideas why this option isn't available anymore and how I can get it back? Without it, I am unable to install certain VM's where Virtio isn't available at boot time.

Thanks in advance!