DevonThink 3 inbox not able to be dragged into Finder sidebar any more

With DevonThink Office Pro I had dragged the global inbox (from its ~library location) into the Finder sidebar. When trying to do this with DevonThink 3 however, it just wont ‘stick’. It wont go. Oddly, I can drag an alias of the inbox onto my desktop, but I can’t drag that into the sidebar either.

Is this a new limitation of DevonThink 3 or is there something wrong with my system which is not allowing this?

Thank you

Did you try to add the inbox folder ~/Library/Application Support/DEVONthink 3/Inbox or the global inbox (~/Library/Application Support/DEVONthink 3/Inbox.dtBase2)? Only the folder is supported by the Finder. This can also be installed via DEVONthink 3 > Install Add-ons.