I have a generated document, generated in house, where a specific set of text has for lack of a better term ghost spaces. When one highlights the text and copies and pastes, the spaces are there. But the document when being viewed or printed does not have those spaces. For example this text:
BANK OF AMERICA
views and prints like the above text, no kerning or tracking issues with the text or spaces in between. But to search for BANK fails in the reader. Search for B A N K (with spaces) will hit that line.