Bookmarks not properly opened in new tab

I set up Flow to open bookmarks in a new tab. This worked great until the current nightly release. When I now have an open connection in a first tab and doubleclick on a bookmark, a new second tab is created. This tab now display the connection mask where you enter the connection data. The real connection though is now displayed in the first tab. In the bookmark list, both connections have a yellow symbol though only one connection is displayed in tab one.