The repository input on Utopian cannot be modified to update the post

Expected behavior

When I change the repository for a post, the repository linked to my post should be modified accordinly.

Actual behavior

I submitted a bug the other day and today the moderator asked me to change the repository. After I did this, he told me that it has not been fixed yet. Therefore, I did it again, but the repository linked to my post after I update my post remained the same. Ideally, it should have been changed to the new one as the moderator told me.

How to reproduce

To reproduce this bug, you go to one of your Utopian post, and click the three dots close to your tile and username of this post. Then click "Edit post". After that, you put a new Github project repository for this post and click the "Update" button.

• Browser: Chrome (Version 63.0.3239.132)
• Operating system: Windows 10

Recording Of The Bug

Here is the recording of my operation to reporduce this bug.