Hello out there,
when starting a query in script mode and then trying to copy a word into the clipboard via doubleclick and CTRL-C, not the word I clicked on is copied but something form the worksheet above.
When I just left click into the script output, the focus jumps back into the worksheet.
Marking some text with the mouse lets stay the focus in the script output though...
I'm using SQL Developer 184.108.40.206.27 with JDK 1.7.0_25 64bit on Windows 7 64bit. (With german localization for both SQLD and Windows, if that matters)
It's a bug! Thanks for reporting this.