#111 Results from Paper Mode cannot be copied to clipboard

[Nutchanon Wetchasit]

Subject> Results from Paper Mode cannot be copied to clipboard

I've recently installed Galculator with MATE desktop, the Scientific Mode
worked really well. but I have some problem with Paper Mode,
that I cannot copy the calculation result from Galculator.

To reproduce:
- Run Galculator
- Set view to Paper Mode (View > Paper Mode)
- Set number base to decimal (Calculator > Number bases > Decimal)
- Enter "-32768 + 8192 + 4096" to the calculator input
- Press "Enter" button
- Click at the result line ("-20480")
- Try to copy the result (Using Ctrl+C or Edit > Copy Display Value)
and paste the result to other program (like text editor)
- You'll see that the result line is not copied.

Galculator: Galculator 2.1.3 (source distribution)
Desktop: MATE 1.8.1 (Debian backports repository)
System: Debian GNU/Linux 7.0 "Wheezy" i386

P.S.
This symtom occurs with Galculator 1.3.4 that came with Debian Wheezy as well.