Cloudbase-init executes before setup.exe is complete, causing a Windows installation fail

On the openstack platform(the version is rocky), create the virtual machine using the Windows image template processed by sysprep(I used the windows 2012 data center Chinese).
sometimes cloudbase-init reboot the Windows after sethostname when setup.exe is running, although the probability of that happening is very small.
At that time the SYSTEM\Setup\Status\SysprepStatus\GeneralizationState's value is already 7, but the setup of oobe still running, this causes the Windows installation to fail to continue with the exception, and the restart remains the same.
I apologize for not keeping the log file, but please refer to the time in log file of sysprep and cloudbase-init for details.
When windows installation fails, I had press the shift+F10, open the terminal(I also looked at the cloudbase-init and setup logs in this way and learned that there might be some problems with the execution timing of cloudbase-init), input regedit for open the registry. modify the HKEY_LOCAL_MACHINE\SYSTEM\Setup\Status\ChildCompletion/setup.exe value to 3, and reboot the windows, can be accessed the system. The chance of this happening again is extremely low, and I've been testing it ever since, but so far I haven't had one. If I run into it again, I'll upload the screenshot.