ShareGate just saved my rear on a weird permissions glitch in an Office 365 Group
@dracnal
Would that be the glitch where no matter what permissions you apply, they don't work for anyone added after a certain point? Everyone before X is fine, anyone after only sees the site if you make them an admin? MS solution: Rebuild the entire site from scratch and move your content over by hand.
edit: Also, glad it was able to save your tail.