OIT recommends waiting to upgrade macs to Mojave

Recommendation: Wait to Upgrade

Please Note: If you choose to upgrade and run into problems that cannot be resolved, you may need to revert to an earlier version of macOS, which entails backing up your files and doing a fresh install.
New Privacy Restrictions The primary problem OIT has observed in compatibility testing is due to new privacy restrictions for how applications access the camera or microphone, user data including Contacts, Calendars, and Photos, as well as control over another application or specific system processes. These privacy restrictions result in numerous prompts with an application’s request to access these areas.
The restrictions are a good step for security but may cause critical applications to not work as expected.