I tested Debian 13 RC1 by installing the Nvidia proprietary driver using:

apt install nvidia-driver

The error from systemctl status dkms is as follows:

× dkms.service - Builds and install new kernel modules through DKMS
     Loaded: loaded (/usr/lib/systemd/system/dkms.service; enabled; preset: enabled)
     Active: failed (Result: exit-code) since Sun 2025-05-18 07:37:53 +07; 1min 22s ago
 Invocation: da858b6286f04dd6965e54bc964fc78f
       Docs: man:dkms(8)
    Process: 855 ExecStart=/usr/sbin/dkms autoinstall --verbose --kernelver 6.12.27-amd64 (code=exited, status=21)
   Main PID: 855 (code=exited, status=21)
   Mem peak: 6.3M
        CPU: 204ms

May 18 07:37:53 vlegion systemd[1]: Starting dkms.service - Builds and install new kernel modules through DKMS...
May 18 07:37:53 vlegion dkms[1069]: Error! Your kernel headers for kernel 6.12.27-amd64 cannot be found at /lib/modules/6.12.27-amd64/build or /lib/modules/6.12.27-amd64/source.
May 18 07:37:53 vlegion dkms[1069]: Please install the linux-headers-6.12.27-amd64 package or use the --kernelsourcedir option to tell DKMS where it's located.
May 18 07:37:53 vlegion systemd[1]: dkms.service: Main process exited, code=exited, status=21/n/a
May 18 07:37:53 vlegion systemd[1]: dkms.service: Failed with result 'exit-code'.
May 18 07:37:53 vlegion systemd[1]: Failed to start dkms.service - Builds and install new kernel modules through DKMS.

Of course, this problem was fixed by installing ‘linux-headers-6.12.27-amd64.’

However, I wonder if ‘linux-headers-6.12.27-amd64’ should be installed automatically. Is this a bug? How can I check if anyone has reported this already?