Issue while posting Channel message contain non-hosted image using graph API

[HARIKRISHNAN_P_K]

While Posting  a message contain an image through graph api in MS Teams channel conversation, I am not able to get the preview of the image that I uploaded. The posted message just showing the link to the picture(to OneDrive or SharePoint which ever the source) not the preview. But I am able to get the image with preview  if the image is a hosted content. 

Am I missing anything or it is limitation of Graph API, any guidance on this is appreciated.

[#2]

@HARIKRISHNAN_P_K ,  "I am able to get the image with preview  if the image is a hosted content". can you please describe more where you are hosting the content? And also references/Links/Repro steps you followed in the entire process this will help us repro it and take this issue forward with Graph Team.