I liked this feature very much, to drag a URL from the Firefox address bar to a mindmap and it would be clickable from a node. This feature was also once described here:
From a different browser window, not tab, simply drag the URL to the node that you’d like to link to, and presto – instant link insertion. Say goodbye to copy/paste!
Now they rolled out a new version, and I noticed it does not work anymore. Instead I get this little error box after dropping the link on the node:
Is there still a way to do it?