Pasting from the clipboard history is not working for me. I have gone to System Preferences > Security & Privacy > Privacy and added Launch Bar to Full Disk Access. It showed that it was added to Accessibility. I quit LaunchBar as per the instructions from Mojave. But after restarting LaunchBar, I am still not able to paste from the clipboard history. Have I missed something, or is this not working as it used to?
I solved my problems (like non working instant send, search in launchbar and snippets) by removing Launchbar from the Accessibility in the Privacy tab in the Security & Privacy Preference pane and re-adding it by dropping it onto it. Hope this helps.