Importing Word hyperlinks moves links a number of characters?

[gaphic2]

I'm getting very odd behaviour from Indesign when importing a large Word document with >1000 hyperlinks. Random links get shifted a number of characters to the left in the paragraph. What could be causing this?

Tried with CS5 and CC2017, Word 2007, Word 2016, on four different systems. I also tried splitting the file in smaller parts, no joy. No error when importing Word document with a single paragraph, but 20 pages is enough to cause the error to appear again, apparently randomly.  A lot less faulty links when importing whole document as an RTF but still quite a lot of instances where the link has shifted in the text. See attachment.

[Steve Werner]

If it were an InDesign file, I'd guess that the file itself has become corrupted. But I'm not a high-powered Word user so that would be purely a guess.