Resolving IBus Issue - IBus prior to 1.5.11 may cause input problems

This solution is if you would like to upgrade ibus in Ubuntu 14.04.4 LTS to the latest version (at the time of writing is 1.5.11).

I recently had to install Intellij on a clean installed Ubuntu machine. These are the steps I took:

1. Install the dependencies

   sudo apt-get install libdconf-dev libnotify-dev intltool libgtk2.0-dev libgtk-3-dev libdbus-1-dev
   

2. Download the ibus 1.5.11 source code (linked from here)
3. Extract the files (tar -xvf ibus-1.5.11.tar.gz) and cd into the extracted folder

4. While in the ibus source folder, follow the instructions from step 1 to install ibus 1.5.11:

   ./configure --prefix=/usr --sysconfdir=/etc && make
   sudo make install
   

5. Restart Intellij IDE or whichever jetbrain's IDE that is in question

if you use only one keyboard layout you can go to Ubuntu: System Settings -> Language Support

or if not found (f.e. mint desktop) search in main menu for language support

and change Keyboard input method at the bottom of the page from ibus to none.

Restart Ubuntu.

It's the easiest way to fix this problem.

Solution from Jetbrains bug tracker:

Either upgrade IBus to version 1.5.11 or add "export IBUS_ENABLE_SYNC_MODE=1" to your ~/.profile, then restart a session.

Alternatively, you can turn off IBus at System Settings | Language Support | Keyboard input method.

IDEA 15 will show a warning if an incompatible version of IBus is in use.