I have the following border set up:

00 deleteme 1.jpg

Here are the settings:
00 deleteme 02.png
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And this is what it prints:

00 deleteme 05.png

How to fix?

I have tried several printers with the same result. Reloaded the print driver. And rebooted the Mac. Tested on other Macs (same result).
OS 10.15.7. Word 16.43 (latest).


[moderator's note: I resized your images and inserted them inline with your post to make it more readable on my computer. See How to attach a screenshot or file in this forum.]