[mfabian@Fedora-20-Beta-TC6-x86_64-netins ~]$ rpm -q ibus-kkc
ibus-kkc-1.5.18-1.fc20.x86_64
[mfabian@Fedora-20-Beta-TC6-x86_64-netins ~]$

- Japanese install
- Select ibus-kkc in the gnome panel
- Type some hiragana
- Hit space to convert to kanji
- Hit space again → candidate table pops up
- Click the あ in the gnome panel, click on 設定 (setup) in the menu
  which pops up → The setup tool of ibus-kkc starts
- In the first tab of the setup tool (labelled 動作) the second last
  option is:

  候補ウィンドウの表示開始位置(G): [0   -+]

  Change this option to 7:

  候補ウィンドウの表示開始位置(G): [7   -+]

- Type some hiragana again
- Hit space to convert to kanji
- Hit space again → candidate table pops up !

  Here is a problem, the candidate table should not pop up now after
  typing space only twice, we changed that option to 7!

- click the あ in the gnome-panel and switch to some other input source
- switch back to ibus-kkc using the gnome-panel
- Type some hiragana again
- Hit space until the canditatetable pops up
  → Now hitting space 8 times is necessary
  That is correct.

So changing this option does not become effective immediately, only
after switching to some other input source and back to ibus-kkc this works.

This is *different* from the other options

  句読点の形式(P):         [。、     ↓]
  ...
  候補ウィンドウの項目数(W): [7   -+]
  [✓] 候補の注釈を表示する

these options become effective *immediately* when the are changed
without having to switch the engine back and forth.

So I think that the 候補ウィンドウの表示開始位置 does not become effective
immediately is a bug.