Saving of formulas as citation and some space not working

I am using version 7.2.1

For some pdf, the highlight annotation is not working properly. The highlighted text is not taking space as the text in the pdf. The same thing is happening in the official demo.

I have found another issue. I think it is related to the spacing issue that I have told you about earlier. When I highlight a mathematical formula in a document pdf js can not recognize the special characters.

Hi there,

This is a duplicate of Highlight annotation is broken for some pdf - #7 by ehtesham.ahmad.nadim.