reported in https://forum.matomo.org/t/copy-dashboard-to-user-not-working-on-usernames-containing-special-characters/32016

1. Create user called test123_-.@+

2. give the user view access to all website

3. try to copy the dashboard to this user

The following error appears:

Cannot copy dashboard to user test123_-.%40%2B, user not found or user does not have access to same site.

Bonus question from the forum:

Finally, why exactly might copying dashboard layouts fail when a user does not have access to the same site as mentioned in the above error message? Ain’t those layouts in general independent from user rights towards sites? 🤔