You cant walk or shift Walk with a Keyboard

Well The Title Explains a lot, In general when you use a keyboard and simply plug to your phone minecraft understands every key you press, but when you play it simply doesnt walk when you dont press ctrl+ W or S at the same time. So Awsd simply doesnt work even if u substitute to other keys. Every other Functions works Well, like opening the inventory , menu , Chat etc...

 

But I recomend searching more bugs about playing with a Keyboard and Mouse.