Did you disable just wake-from-sleep or standby mode using pmset utility? In my case only after I disabled standby completely both MacBook Air 2014 and MacBook

Did you disable just wake-from-sleep or standby mode using pmset utility? In my case only after I disabled standby completely both MacBook Air 2014 and MacBook Retina 2015 stopped waking up under the last 3 versions of OSX. I suspect the bug depends on the software one uses that is why only some users are affected.