Worlds in mcpe are glitchy.

So I Use A HTC Evo 4G Lte. My Worlds Are Really Glitchy. And The Baby Mobs heads Have A Weird Position. I Expected Mcpe Normal, Because I Had Mcpe On A Tablet But The Tablet Broke. Mcpe On The Tablet Worked Perfectly. But Not On The Phone I Use To Play Mcpe.