[Interest] "QXcbClipboard::setMimeData: Cannot set X11 selection owner"

[René J. V. Bertin]

it took a while, but I just got bitten by this again. The diagnostics output I 
added shows this:

QXcbClipboard::setMimeData: Cannot set X11 selection owner
        clipboard mode= 0 connection= 0x7fcdab809000 time= 4293362843 newOwner= 
20971523 effective owner: 4194305

Any idea what to make of that?

R.