When creating a Request via Unified Self Service (USS), posting a comment does not work, as well as attaching a file to the comment to be posted:
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Observe that no error is produced on the front-end.
Checking the logs does not show any evidence of the problem either, even when enabling traces on both USS and Catalog.
Creating the same Request directly from the Catalog interface works without problems.
The problem was caused by the Image field not having a content.
To resolve the problem:
1. Create an image file in Paint, for example, named blank.png. Save it to INSTALL_DIR\filestore\images
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src="/servlet/servlet.FileDownload?file=0150c000004AK3cAAG" alt="Image1.jpg" width="744" height="229">
2. Edit the Form, click the image field and add the following to the URL attribute: Filestore/image/blank.png
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src="/servlet/servlet.FileDownload?file=0150c000004AK3bAAG" alt="Form1.jpg" width="746" height="372">3. Save and test with USS. It should work now.
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src="/servlet/servlet.FileDownload?file=0150c000004AK3fAAG" alt="Test1.jpg" width="725" height="404"><Please see attached file for image>
src="/servlet/servlet.FileDownload?file=0150c000004AK3gAAG" alt="Test2.jpg" width="727" height="197">