This seems to be caused by a recent change in the UITK, as things worked correctly before and to my knowledge there has been no relevant changes to the app that might have caused this regression.
I reported a minimal example as bug #1500409 (which is actually a similar and related problem which when fixed will also solve this issue) ** Changed in: webbrowser-app (Ubuntu) Status: New => In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1499437 Title: [desktop] Dragging a bookmark to a folder activates the bookmark To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/webbrowser-app/+bug/1499437/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs