qubes-template-fedora-26-minimal does not allow root access

[virtualdxs]

Qubes OS version:

R4.0

Affected component(s):

VMs running fedora-28-minimal

Steps to reproduce the behavior:

sudo qubes-dom0-update fedora-28-minimal
Create a StandaloneVM based on fedora-28-minimal
Open a terminal
Run a sudo command

Expected behavior:

Without asking a password, it does what you ask

Actual behavior:

Asks for a password. sudo -v says user is not allowed to use sudo

General notes:

Can't get passwordless root via xl console either

Related issues:

#1130

[andrewdavidwong]

Duplicate of #3833

[andrewdavidwong]

This appears to be a duplicate of an existing issue. If so, please comment on the appropriate existing issue instead. If you believe this is not really a duplicate, please leave a comment briefly explaining why. We'll be happy to take another look and, if appropriate, reopen this issue. Thank you.