Attachment (preview) Fails to load after re-uploading attachment with the same exact name on picker screen

Issue Summary

After attaching a file to a confluence page. If we re-upload the same attachment with the same name using the picker the name changes to the content id of the file - Certain apps using this api are also affected such as ex:“GoEdit” "Atlassian Companion" (Dragging and Dropping the attachment onto this page does not seem to cause an issue)

https://<sitename>.atlassian.net/wiki/pages/viewpageattachments.action?pageId=<page id>

Steps to Reproduce

1. Step 1 Upload/drag and drop a attachment on a confluence page and publish the page. (While in the Editor)
   
   
2. Step 2 Go to the attachments and upload the same attachment(name should be same) again using the upload attachment option.
3. 
4. Step 3 attachments are uploaded and we can see the version.
   However when viewing the page the attachment now corrupt and cannot be displayed or deleted from the page
   

Expected Results

The attachment should show normally

Actual Results

Attachment "Fails to Load"

Workaround

Upload the updated version from Drag&Drop the file, it will work and the title stays as it should.