Copying text will add more space

[consiststh]

Describe the bug

After adding the word according to the coordinate of the word, there will be an extra space after some words are copied.

To Reproduce

Code to reproduce the issue

Some core code:
BaseFont baseFont = BaseFont.createFont(curFontPath, BaseFont.IDENTITY_V, BaseFont.EMBEDDED);
PdfContentByte cb = writer.getDirectContentUnder();
cb.beginText();
cb.setFontAndSize(baseFont, fontHeight);
cb.setGState(gState);
cb.showTextAligned(PdfContentByte.ALIGN_LEFT, txt, x, y, 0);
cb.endText();

Expected behavior

We want the copied word to have no Spaces

Screenshots

郝𭣣 忠𫠡 陵

System

• Used font:Inconvenient to provide
• OpenPDF version:1.4.2