Hello and thank you for raising this question! No, this is not a known issue. Please use the desktop app to send us more information on this, if possible, from the accounts that are experiencing the issue. To do so, click on the Help button on the lower left, then select "Give Feedback"
Please include as much detail as possible, including how many people can and cannot see the content, how many different teams, any other details that might be relevant. We will use this to investigate what might be happening and hopefully fix the issue.
Thank you for your dedication and help in this matter, and please continue to add details or ask other questions here as well! Michael