Correct character position in PDF export by XSLT?

Hello. I am facing a problem with unicode characters in PDF export. They are shifted higher and collide with line obove. Is there a possible solution?

I wonder if it is a question of xslt transformation but my knowlegle of it is poorer than beginer’s. For export reasons I made custom PDFClass and PDFTemplate where xslt could be added. My version would be to select these characters, wrap them to an relatively positioned element to the place.

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Printscreen example. Two chracters are above the lines where they belong. Is there a way to get them back?