Access to shared dataset

Hi all,

I face an issue trying to share a report using a shared dataset:

I built a report in a workspace A using a shared dataset located in a workspace B. I am the administrator of the workspace A, and a "Member" on the workspace B. I had no difficulties buidling the new report on Power BI desktop and connecting to the shared dataset. However, when I publish it on my workspace A, all the viewers of the workspace A can't see the visuals using the workspace B data. They currently don't have access to the workspace B.

Is it mandatory to add them on the workspace B as viewers or is there an alternative solution ? It is quite a huge number of people, therefore not adding them one by one would be highly preferable.

All users are using Pro licences.

Edit: opening the report via an app didn't fix the issue.

Thank you for your help,

Clement.