But now it is only a discussion of my chosen wording.
The actual problem is still present.
In certain - not definable situations - it is not enough if the user has
sudo rights - to enter the users password - it has to explicitly be the password of the root user.
When a user face such situation and have chosen to have identical passwords for the two different accounts then a confusion will rise since the user will be sure that the correct password has been entered.
On the other hand - having different passwords will ensure that the user can be aware that it is in fact the root password which is required.
Why such situations arise is not the issue - however resolving the issue is.
Which is why I have tried to explain it in a wiki entry for others to benefit from.
It is not a tutorial on subtle differences in the understanding of root/superuser/user differentiating but an approach to a factual issue several users - including my self - faces from time to time.
Previously I used to go nuts when my password wasn’t accepted though it was correct. Now - I switch to the root password and task accomplished.
It is a simple working solution to an otherwise really annoying situation.