pkg really wants to install nvidia-driver-390, why?

I have nvidia-driver-470.86 installed, but every time I run pkg upgrade or pkg 
install it wants to install nvidia-driver-390.  That obviously fails because of 
conflicts with the installed driver.

That does not cause me too much trouble, but I am really curious what's so 
special about nvidia-driver-390 that pkg insists on me having it.

Example:
# pkg upgrade
Updating FreeBSD repository catalogue...
FreeBSD repository is up to date.
Updating poudriere repository catalogue...
poudriere repository is up to date.
All repositories are up to date.
Checking for upgrades (26 candidates): 100%
Processing candidates (26 candidates): 100%
Checking integrity... done (0 conflicting)
The following 1 package(s) will be affected (of 0 checked):

New packages to be INSTALLED:
         nvidia-driver-390: 390.144 [FreeBSD]

Number of packages to be installed: 1

The process will require 100 MiB more space.

Proceed with this action? [y/N]: y
[1/1] Installing nvidia-driver-390-390.144...
pkg: nvidia-driver-390-390.144 conflicts with nvidia-driver-470.86 (installs 
files into the same place).  Problematic file: /usr/local/bin/nvidia-bug-report.sh

# pkg check -d
Checking all packages: 100%

-- 
Andriy Gapon