Keyboard unexpected behavior: multi-key on single-key

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Install Ubuntu 14.10 Amd64
2. Install Transmission Remote GUI from Software center. Current version is 
5.0.1
3. Open Transmission Remote GUI and create a new connection
4. Type any string inside "Remote host" input field.
5. Some of the letters will be inserted twice. For example, if I try to write 
"test" I will get "tteesstt" inside the input. Also if I try to delete a letter 
using backspace, for some of the letters I will delete two of them.
6. Tested on Thinkpad T410 on a fresh install of Ubuntu 14.10

What is the expected output? What do you see instead?

What version of the product are you using? On what operating system?
Ubuntu 14.10 Amd64, fresh install

Please provide any additional information below.

Video demo of the bug available on this screen cast: 
https://www.dropbox.com/s/52vy6g03kbdj889/transmission-remote-gui.ogv?dl=0

Have fun fixing the bug!

Original issue reported on code.google.com by andrei.s...@gmail.com on 26 Oct 2014 at 10:18

[GoogleCodeExporter]

Will this issue be fixed?

Original comment by andrei.s...@gmail.com on 28 Oct 2014 at 3:56

[GoogleCodeExporter]

Really strange bug. You can right click on the input box and select: Input 
Methods and change it to: None

Original comment by glisign...@gmail.com on 8 Jan 2015 at 4:55

[GoogleCodeExporter]

Changing the input method to None is not fixing the problem. I've tried several 
other input methods, getting the same result.

But... am I the only one with this problem? It's reproducing on all my devices.

Original comment by andrei.s...@gmail.com on 9 Jan 2015 at 7:20

[GoogleCodeExporter]

I have the same problem with Ubuntu 14.10 and x64, I tried also download the 
version from svn and have the same problem

Original comment by roigall...@gmail.com on 19 Feb 2015 at 7:24