unable to edit VM configuration for boot-from-ISO VMs

**Describe the issue**
New VM -> Virtualize -> Linux
Leave "Use Apple" unclicked.
Boot ISO image -> select downloaded Ubuntu ARM ISO or any other ISO.
Click "continue" all the way to Summary
Click "Open VM Settings"
Save.
In the VM settings dialog, unable to edit any settings, for example, Networking. Dropdowns appear but can't select from them.
Same happens if enter VM settings thru icon click on the top right.

Does NOT happen if using Prebuilt from gallery - all settings remain editable.

**Configuration**
* UTM Version: 4.15 (74)
* macOS Version: 13.2
* Mac Chip (Intel, M1, ...): M2