Can't choose second GPU in UI for PCI-Passthrough

[cloudrootab]

Are you using XOA or XO from the sources?

XO from the sources

Which release channel?

None

Provide your commit number

fd9c9

Describe the bug

Creating issue as per Oliviers request (https://xcp-ng.org/forum/topic/10232/feature-request-disable-smart-reboot-if-guests-have-pci-passthru)

I have two GPUs. However, I can't even choose the second GPU in the UI for passthrough. This lead me to having to do this via cli for the second GPU (GTX1060).
GPU0 AMD RX6400
GPU1 Nvidia GTX1060

Error message

No response

To reproduce

Have more than one GPU available. Successfully assign first PCI-passthrough for first GPU.
Try to assign another VM a GPU, and this won't be possible in the UI.

Expected behavior

I would expect to be able to choose second GPU.

Screenshots

Node

20.18.1

Hypervisor

XCP-NG 8.3

Additional context

[cloudrootab]

I could also reproduce with XOA 5.102.0