Hi there!
Mobile double click? What do you mean it does not work?
Do you mean touching the screen with two fingers to open the menu? If yes, there is a plugin parameter for you to adjust that.
Otherwise you need to give me more information. BY only saying "it does not work" will not help me figure out what is the problem and also not help you at all.
The problem persist on a clean project? What the double click is supposed to do? It's on mobile or through web browser?