Scenario to reproduce:
- Open "data/samples/CLUSTALW/COI.aln".
- Select any region.
- Click "Ctrl+Shift+C".
Current state: the region is copied in some format to the clipboard, there is an info message in the log:
"[INFO][18:45] Saving document /var/folders/c1/vql5jmsj3rd03xlwyd_gzxzw0000gn/T/ugene_tmp/p93381/clipboard_0.tmp"