we did some more research and found that the problem is that the qemu-img convert command now uses -t writeback by default and when changed it uses to -t none or -t directsync.
A quick fix for us was to move the templates to local storage
Here...
I have a problem with cloning templates. I have an LVM on which I have a templates. When I want to clone the template, it tells me an error
create full clone of drive ide0 (lvm-nvme:vm-9922-cloudinit)
Logical volume "vm-219-cloudinit"...
