The same thing added from the forms (build on html form entry) does not show as thumbnail images in attachments widget. Although it gets stored in the same complex_obs directory
@premnisha I suspect that you did not add the concept complex that you use in your forms as a concept complex that is on Attachments radar. This is controlled by the GP "attachments.conceptComplexUuidList", see here.
@premnisha you’d need to add the UUID of this concept 174184 (the one with the UUID starting with "98928c70") in the list that is the value of the GP. Something like that: