No longer works consistently Rated 3 out of 5 stars

This WAS a great add-on, but it no longer works all the time. It's not working consistently in Firefox 29, and it wasn't working consistently in FF 28. Sometimes it works as desired for one or two tabs. But just as often, the bookmarks disappear as soon as the tab opens. I really like this add-on and hope it can be fixed.

Does this happen only with Ctrl-click (rather than middle-click)? Only with livemark (rss feed) items? Only with some feed-related add-on installed? If you (or anyone else experiencing this or similar issue) could provide more details, it would be helpful. Version 3.0 (currently on the development channel) works somewhat differently; perhaps you could test if it functions better for you.