I have a scenario wherein the CWS is deployed and specifically for Android OS, it seems that any email being sent out with an attachment from the local storage to the same corporate domain, the extension of the attachment is getting changed.
While sending the same attachment to an outside domain, it seems to be fine.
I feel it is more like a exchange side issue and not related to CWS, but thought to confirm with experts before concluding.
For eg: a pdf attachment was sent from Capsule workspace and the recipient received it like this : -