The curser jumps to the beginning of what I'm typing part way through

Recently on my IPad Air 1 , when I'm typing the curser will jump to the beginning so I have the last of the text at the beginning. It's doing it constantly. I've rebooted IT holding down on/off button and power at the same time plus closing all open aps. Anyone else have this problem or know how to correct it. Thanks. ( like this. It looks )