Actually, if anything,, it should move.
PDF is not a word processing file format.
PDF does not tolerate word processing like editing.
A good read of the ISO Standard for PDF (ISO 32000-1) makes this evident.
Touchup of characters and words can be done. However, depending on how the PDF was built a goober can occur quickly.
Export the PDF page content to Word & edit there or, if available, edit in the authoring file.
Be well...