第一次在UITableView中的tableview单元格XIB的高度不正确？

I am having hard time resolving one issue. I have a tableview which has many prototype cells. One of them i am using a tagview to show multiple tags selected. So i have used a XIB file which has a TAGVIEW as subview of it & I have used that XIB in tableview cell. Now when i first load the tableview and scroll down then height of cell is large but when i scroll down and up then it's fits in the size of tags. I have tried below solutions for the but not of them worked.I am having hard time resolving one issue. I ha