NSAttributedString reporting incorrect sizes for UITextView sizeThatFits and boundingRectWithSize with correct options set

Question

I have an NSAttributedString that is reporting a boundingRectWithSize (and by extension a UITextView which improperly calculates its sizeThatFits) when the font size is decrease

Answer 1

Create NSTextStorage object and init with the attributedString. and calculate bounds.

NSTextStorage *attributedText = [[NSTextStorage alloc] initWithAttributedString:[[NSAttributedString alloc] initWithString:text attributes:@{NSFontAttributeName:systemFont}]];
CGRect textRect = [attributedText boundingRectWithSize:CGSizeMake(textW, CGFLOAT_MAX) options:NSStringDrawingUsesLineFragmentOrigin context:nil];