I doubt it. A document processor like Writer considers space characters in source typing as separators between linguistic units. These separators can be expanded or shrinked to allow for justification. This can’t be done with U+0020 SPACE or U+00A0 NO-BREAK SPACE. It could be very approximately simulated with the spaces at U+20xx but this is imperfect and consequently never done.
Writer is not a basic text editor where all characters are used as defined by the font. Formatting directives, such as style attributes, give instructions on how to interpret spaces.
So, perhaps, forcing the paragraph styles to left alignment could cause spaces to be rendered as U+0020 SPACE but I didn’t check that. U+0009 TAB will never appear in any output because it must be translated to some position defined in paragraph style properties (in a document processor, contrary to a text editor, tab stops are not necessarily evenly spaced).
Anyway, this doesn’t solve the problem with any non-personally produced PDF. As I suggested, try with the .odt version of the Getting Starting Guide.