urdu and english words reposition themselves when used in a field together

Question

it is kind of Right Text Alignment or Left Text Alignment issue. RTA and LTA works well when only one type of language is used in a field. but when mixed languages اردو are used. the position of words of two languages gets disturb۔ Here i try to write اردو words and these are in line with the paragraph. but when written in a field they goto the right side of the sentnece.