Word, Excel place characters on the screen through a system that works with the printer and screen drivers. So we get the WYSIWYG for Word and Excel.
When you put this into a PDF the spacing SHALL CHANGE because you changed the output device.
Woah? Yup, that's how this system works and has created your question. But as I lead off it may upset today's users. They didn't expect this.
Hello! I'm having a problem with PDFs that came from Word and Excel files. Every time I try to make a minor change in a PDF, I end up with spacing errors all over the place: random spaces in words throughout the document, numbers in tables shifted from one cell to another. These problems can't be fixed, either. Sometimes it's OK because I have the original Word/Excel document so I can go back and make the corrections there and then re-convert, but sometimes I only have the PDF and can't get the original.
Even if you don't know a solution for this, I'd love to have some perspective on why it is happening.