Masked Input plugin acts strange on mobile device?

I am using the masked input plugin from the following website. Frop a laptop, the mask works fine for a MAC Address, for example, as I enter e1, it skips over the colon and I continue entering, however, if I access the page from a mobile device, and my intention is to enter 11:22:33:44:55:66, the cursor always stay开发者_运维技巧s in the front and it gets entered as 66:55:44:33:22:11.