Yes, and here is why: I had a Huawei mate 7 running kitkat 4.4.2 maybe?. It had a great feature called "Multi-screen". You play a video on your phone, tap the icon in the top right corner, and you send the video to your smart TV. It worked flawlessly and was a great feature.
I just upgraded to a Huawei mate 8 running marshmallow, and guess which featured was removed or not currently working...WTF. They now seem to call it "Mirrorshare", in the advanced settings, but it is not working. Why would they possibly remove this or put out 6.0 with it broken. And before anyone says "Whats the big deal, get an aftermarket device to stream or plug the phone straight into the TV". WHY!?!? WHEN I USED TO BE ABLE TO TAP A BUTTON.
Someone also stated that they may have been forced to remove it so the aftermarket streaming devices and apps can make money. If this is true, that is also absolutely insane. Maybe new cars should remove all the turn signals, so the companies that make magnetic lights you put on your bumpers can still stay in business.
I have a phone and a TV on the same wifi network, the fact that I cant throw my phone video to my smart TV in the year 2016 is absurd.
/rant off.