Add Watermark to Word DOC Document using C# Java | Office 365 or Word Online do not Show Watermark Shapes in Editing Mode

I am using shape in header to display watermark.
Watermark is getting displayed in desktop app correctly.
But when we upload the file to 0365 and edit, shape is not displayed.

Attached the test file, watermarked file and loading problem Files.zip (24.6 KB)
Screen Shot 2020-04-06 at 8.30.22 PM.png (334.3 KB)

Sample.docx file has the code used to add watermark.

@vgcnerella2019,

We have added a watermark to “Sample.docx” by doing the following steps in MS Word 2019 (desktop app) and attached it here for your reference (see Watermarked using MS 2019.zip (18.5 KB)).

  1. Open Sample.docx in MS Word 2019
  2. Go to Design > Watermark > apply CONFIDENTIAL 1

We can see this watermark in MS Word 2019 (desktop app); but when uploaded and viewed Online (in Editing mode), even this watermark is not visible. So, this seems to be a problem with Office 365.

Please let us know if we can be of any further assistance.