For a while now I've noticed this problem, and today I decided to share it with you.
When I log in and post something, the "Insert/Edit Link" button works perfectly.
However, if I publish the post and then click on "Start a New Post", the mentioned button does not work anymore.
But if instead of clicking on the "Start a New Post" button I refresh the page and then click on "Text" to start a new post, the button works again.
The blog I need help with is emersonmorresi.com.