title: UITableViewCell custom separator disappear during scroll ios8
body: <p>i've searched but i haven't found a solution to this, i have a tableview with uitableviewcell. To the cell i need to apply this custom separator:</p>
  
  <pre><code>UIView *lineView = [[UIView alloc] initWithFrame:CGRectMake(90, self.contentView.frame.size.height, 80, 1)];
  
  lineView.backgroundColor = [UIColor lightGrayColor];
  [self.contentView addSubView:lineView];
  </code></pre>
  
  <p>and the separator is displayed correctly, now, i don't know why if i scroll medium fast up and down tableview, the separator disappear on certain cell. I tried to set by:</p>
  
  <pre><code> - (void)layoutSubviews
  {
      [super layoutSubviews];
  
      UIView *lineView = [[UIView alloc] initWithFrame:CGRectMake(90, self.contentView.frame.size.height, 80, 1)];
  
      lineView.backgroundColor = [UIColor lightGrayColor];
  
      [self.contentView addSubview:lineView];
  }
  </code></pre>
  
  <p>any suggestion? thanks</p>