ive had my shift for about 2 months now and it was perfect at first. After a couple weeks i started to notice that sometimes when im using the internet or apps and i want to go to a certain page or link or option i have i have to press it on the screen twice. I had to double tap. Touching once does nothing. It happened sporadically at first but now i have to touch almost every link or command or option twice. Has anyone else had this problem and can anything be done about it??