When i'm doing some editing about the structure if my launchbar, the shown content of groups becomes wrong.
Example: i have some root level item folowed by some groups. The group contents are not visible ("+" sign in front). Now i add some items to the content above these groups (using context menu). When i'm now opening a group (switching the + sign), the wrong content is displayed. After closing Prefs and reopening, everything is fine again.