I have figured out where's the problem!
Problem was with my text file, from which i was loading data,
When i place all my data in one line there is no problem
1;Scooby-Doo;Pikachu;Spiderman;Cindrella;Scooby-Doo;
|
2;Bart;Samurai Jack;Batman;Yogi;Batman;
But when i place data in multiple lines there is a problem
1;Scooby-Doo;
Pikachu;
Spiderman;
Cindrella;
Scooby-Doo;
|
2;Bart;
Samurai Jack;
Batman;
Yogi;
Batman;
You may think why? When i'm using tokenat to get data, tokenat is loading new line with the data, so that's why text area is requiring higher height than it needs.