Fujifilm XT5 Live View Depth of Field (DOF) not supported?

I am on Capture One 23 Build 16.2.4.34, using Fujifilm XT5 Build 2.03

Nothing happens when I click the DOF Tool on the Live View Tool Bar.

Similarly, In the Live View Tab, the DOF button is greyed out. 

Live view will simulate exposure but not the DOF.

On the XT5 itself, when not tethered, this behavior is also the same except there is a user assignable function to preview DOF. However as all controls to the camera is locked out, I cannot activate this function when tethered.

Derek