The following bug has been logged on the website:
Bug reference: 11551
Logged by: Eric Wadsworth
Email address: eric(at)wadhome(dot)org
PostgreSQL version: 9.3.4
Operating system: Ubuntu Linux 14.04 LTS, 64-bit desktop edition
Description:
In the SQL editor, copy and paste works sporadically. This always fails for
me: "select * from mytable;" Then use the mouse to select and/or highlight
any of the output, and it won't be copied into the primary clipboard. Press
CTRL-C, and it also won't be in the secondary clipboard.