Black windows on Sync tab

The UI issues are in progress, and should likely be resolved in the next alpha.

With regard to syncing, Alpha 12 uses a new iCloud structure. Unfortunately, this means the 7.0 alpha builds on macOS will no longer sync with Infuse 6.x for iOS/tvOS. Syncing should start working again once 7.0 for iOS/tvOS become available on the App Store.

If you like, you can sign up to start testing 7.0 on iOS/tvOS here.