Word - Same Line Page Breaks Visibly Change Formatting

Sure- thanks for taking a look. See images below with hidden text/format marks shown. FYI - The cursor is after the word "center" in both examples.

As soon as I open any in-progress or previous document where a page break was on the same line and the text appeared as shown in Example 1 now shows the centered text aligned left as seen in Example 2. Thus, any minor update to a document necessitates review of the entire document to change if/where any page breaks are located. 

Example 1 with format marks shown - in this example, the centered text is shown how it always has looked in the past, when any page break did not change how the visible text formatting appeared (regardless of whether there was a page break and regardless of where a page break was relative to the text). 

Example 2 with format marks shown - in this example, the page break is on the same line and the "center" alignment of the text is inexplicably changed to be aligned left.