Regarding WORDSNET-16931, we have completed the work on your issue and come to a conclusion that we would not be able to implement the fix to this issue. Your issue (WORDSNET-16931) will be closed with ‘Won’t Fix’ resolution. Please see the following analysis details:
The problematic line is, in fact, shading of a space between inline shapes in the first line. It is visible if the document is zoomed in MS Word, too.
There is a space between the two inline shapes in the first line. It has black shading and sz 0 in document.xml. The line has the height of the shapes and so the shading of a very narrow space between them appears as a vertical line.
The shading is visible in MS Word 2016 at zoom 300%. It is visible in MS Word PDF export result msw-2016.pdf in Acrobat Reader at zoom 800%. It may become not visible again at higher zooms, but is, in fact present in the documents.
So the presence of a space with black shading in the layout looks correct to us. Shading visibility depending on zoom factor is not likely to be imitated by Aspose.Words. Please see the analysis above.
So, you may remove the shading or remove the problematic space as a workaround.