up key does not work

If I write a new message used GMail webapp, in the text box I can not move up (do nothing). The other cursor conrol keys work.

Balage

Description: Ubuntu 14.04 LTS
Release: 14.04

unity-webapps-gmail:
  Telepítve: 2.4.16+14.04.20140409-0ubuntu1
  Jelölt: 2.4.16+14.04.20140409-0ubuntu1
  Verziótáblázat:
 *** 2.4.16+14.04.20140409-0ubuntu1 0
        500 http://us.archive.ubuntu.com/ubuntu/ trusty/universe i386 Packages
        100 /var/lib/dpkg/status

webapp-container:
  Telepítve: 0.23+14.04.20140428-0ubuntu1
  Jelölt: 0.23+14.04.20140428-0ubuntu1
  Verziótáblázat:
 *** 0.23+14.04.20140428-0ubuntu1 0
        500 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/main i386 Packages
        100 /var/lib/dpkg/status
     0.23+14.04.20140414-0ubuntu1 0
        500 http://us.archive.ubuntu.com/ubuntu/ trusty/main i386 Packages