I just found this link¹; does it help to prevent the issue?
'''
Typing in edit fields generate duplicate letters
This is more likely to happen under Ubuntu and Ubunto derived distros,
and with GNOME Desktop but other distros/Desktop environments can be
affected too.
The problem is originated by bugs in the ibus Input Method System.
Unfortunately Ibus is the default input method of GNOME desktop.
If you don't know what an IM is, this means that you do not need it, and
therefore the easiest way is to disable IM's at all.
In order to do that you have a number of options, namely:
1 - Disable (or set to "none") the Input Method in System
Settings->Preferences->Input Method
2 - Add the three following lines in /etc/profile (system wide)
export GTK_IM_MODULE=gtk-im-context-simple
export QT_IM_MODULE=simple
export XMODIFIERS=@im=none
3 - Add a file named input_method.sh containing just the 3 lines
above in /etc/profile.d (system wide)
4 - Add the 3 lines above in the home directory ~/.xprofile (per
user). If there's no ~/.xprofile in your home directory, you should
create one.
5 - Create a Lazarus launching script containing the same 3 lines.
(affects only Lazarus)
Methods 1 and 2 may not survive after a system update, while 3,4 and 5
will.
Be aware that both GTK and QT applications may change dynamically the
IM. If you experience the problem in an apparently random way, chances
are good that some other application is enabling again an IM and fails
to set to default when terminates. If such is the case method 5 is the
only one suitable.
You may find more information about Input Methods, and how to deal with
them in:
https://fedoraproject.org/wiki/I18N/InputMethods[2] (This is Fedora
specific but most informations apply in general)
http://www.pinyinjoe.com/linux/ubuntu-12-chinese-setup.htm[3] (This is Ubuntu
specific, but again most informations apply in general. It explains how to
enable IM but the info can be used also to disable it)
'''
¹
http://wiki.lazarus.freepascal.org/Lazarus_Faq#Typing_in_edit_fields_generate_duplicate_letters
--
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to ibus in Ubuntu.
https://bugs.launchpad.net/bugs/1399945
Title:
Settings, Preferences, ect. - All keyboard input is added twice
Status in Winff:
Unknown
Status in ibus package in Ubuntu:
New
Status in winff package in Ubuntu:
New
Bug description:
Test Case:
Open winff
Try to edit or add something using keyboard. All characters are doubled
Screen shows attempt to add /Videos to Output Folder box
ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: winff 1.5.3-4ubuntu1
ProcVersionSignature: Ubuntu 3.16.0-25.33-generic 3.16.7
Uname: Linux 3.16.0-25-generic x86_64
ApportVersion: 2.15-0ubuntu2
Architecture: amd64
CurrentDesktop: Unity
Date: Sat Dec 6 10:32:03 2014
InstallationDate: Installed on 2014-11-16 (20 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20141114)
PackageArchitecture: all
SourcePackage: winff
UpgradeStatus: No upgrade log present (probably fresh install)
To manage notifications about this bug go to:
https://bugs.launchpad.net/winff/+bug/1399945/+subscriptions
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