In these versions clicking buttons (ex. "Resume Game" in the pause menu) requires double or even triple clicking to make them work. You also must double click to start mining or hit something. This happens over 50% of the games I start. Every time I must double click, when I am playing the mouse also appears on screen. If you restart Minecraft it may not do it anymore (although sometimes it still does). 

Here is a link to see it:

https://youtu.be/kCd2hgRio5o (video still may be processing) (Circles around the mouse mean clicks).