Creating a post with same title and tags as an older post results in error

[ng-gist]

Expected Behavior

User should be able to create multiple posts with the same title and tag.

Actual Behavior

App throws a duplicate transaction error if same title and tag is used as an older post.

Steps to Reproduce

• Click create post.
• Enter title same as one of your older post and click Next.
• Enter story text and click Next.
• Enter same tag as the older story.
• Post.

Recording of the issue

https://www.youtube.com/watch?v=BuuZzT3CGxk

Possible fix

Change the posting key to a randomly generated string

Device : Samsung S8
System Operating : 8.0.0 Oreo
Browser : Google Chrome ( 66.0.3359.158 Version)
App Version: 2.0.3 beta