# rpm -V udev
.M.......  g /usr/lib/udev/compat-symlink-generation

The file is packaged as empty and with 000 permissions:
# rpm -qlv udev | grep compat-symlink-generation
----------   1 root root  0 Apr 20 02:59
/usr/lib/udev/compat-symlink-generation

However, the actual file contains "COMPAT_SYMLINK_GENERATION=2" and has 644
permissions:
# ls -l /usr/lib/udev/compat-symlink-generation
-rw-r--r-- 1 root root 28  4. Okt 2018  /usr/lib/udev/compat-symlink-generation

I'd expect that 'rpm -V' doesn't report anything in /usr.

Note: This affects at least Leap 15.3 and Tumbleweed.