The category tag on post previews exhibit a weird behaviour.

[HarryHeights]

Expected Behavior

There are nine categories on Knacksteem. These categories have their specific tags and I can use any of them depending on the kind of contribution I wish to publish.
After publishing the content, I expected the category tag I used on the post is what should appear on the post preview.

Actual Behavior

I noticed that the category tag that is shown on the post preview is different from the tag I actually used while creating the post.
What makes this weird is the fact that, each time I open any of the posts I have published and go back to it, the tag changes. Not only on that particular post I opened but on others too.

How to reproduce

If you already have posts created and publish on Knacksteem, skip the first step.

• Publish contents on Knacksteem. Preferably 3 articles. Use any category tag you wish to use.
• Access your user profile to view the contents.
• Look at the tag showing on the post preview
• Now open the article
• Go back to the previous page
• You will notice that the tags on other articles you published earlier have been shuffled and could be displaying the wrong tag.

Test Environment

• Browser: Google Chrome V70

Video Recording

https://youtu.be/aCvsmK7XYE4