After only getting around to updating xcode recently I noticed 2 new debug msgs that print at every build even if all else appears to be error-free:
[Window] Manually adding the rootViewController's view to the view hierarchy is no longer supported. Please allow UIWindow to add the rootViewController's view to the view hierarchy itself.
Unsure what to do here, ignore ?
Metal API Validation Enabled
Is there any way to turn Metal API Validation off ?
you can disable Metal API vailidation in the xcode scheme settings, not sure about the other warning but there might be something you can change there. also not sure if the projucer would reset this when you remake the xcode project