iOS18 issue: paragraph spacing is losing?

[ximmyxiao]

As the picture says: the image attachment is being placed too tightly to the text content in iOS18 , but in iOS17 ,everything is fine .

I have debug the code ,found that DTHTMLElement::attributedString
will call the appendString in NSMutableAttributedString (HTML)

But this call to appendString seems not call the method in the NSMutableAttributedString (HTML) in iOS18 , maybe the system provide this function it self?

And because of this method chaos , the paragraph spacing attribute is missing in iOS18 and cause the problem