Unable to disable hyper V for a VM

Steps to reproduce:

1. Edit a VM. 

2. Set Hyper V toggle to No. 

3. Update. 

Expected behavior:

1. Edit VM again, see Hyper V toggle set to No. 

2. Start VM, see hyper V reported as absent in OS. 

Actual behavior:

1. Edit VM again, Hyper V toggle is still set to Yes. 

2. Start VM, OS reports presence of Hyper V. 

UnRaid 6.10.0-rc4, an almost fresh install, windows 10 guest.