five issues with one Office 365 Group

Sorry for delayed response, this got missed from my radar. Just replied...

Thanks for this. All the (SharePoint and Office 365) admin settings allow for external sharing. For many external users, they seem to be granted access as expected. Also, I did not make any changes via PowerShell. What I did do was setup permissions for the document library and SharePoint pages to allow the Group to read and edit content as I saw fit, relying only on the Group (rather than the individual external users) when setting up the permissions.

What I've seen is that the user experience is inconsistent as I've documented above. Some of these issues, (1), (2), and (3) may be common to others and be a backend problem related to syncing and maintaining permissions between Groups and SharePoint. I also think the issues I mentioned about search and controlling the group from Outlook (issue 4 and 5) indicate I have issues unique to this Group and Team site, since these issues aren't appearing with other Groups on my tenant.

On issues 1-3, I'm hoping there's a workaround people have identified because I'm adding lots of external users and I'd like them to have a consistent and predictable experience!

On issues 4 and 5, I think this Group is uniquely messed up somehow, and I haven't been able to get the help I need to identify the source of these issues.  I was hoping someone may have experienced these unusual problems too and figured out how to fix them.