Keep auto-update setting disabled by default
All team members working on common cloud files need to be on the same version of XD. Otherwise the file wont open for members on the older version. Most of the time the updates dont even appear at the same time for both Windows and iOS. Each time Creative Cloud app updates automatically, it sets the Auto-Update option to enabled for all apps. Unsuspecting update leads to problems when all team members havent been able to update their respective apps and work gets affected. Please let the Auto-Update setting remain disabled as default and users can choose to update if they need to.
Thanks for filing this. This seems like a bug and isn’t expected, so I’d suggest that you file this as a ticket on the Creative Cloud Download and Install community support forums: https://community.adobe.com/t5/download-install/bd-p/download-and-install?page=1&sort=latest_replies&filter=all