Description of problem:

I learn Japanese, and take my grammar notes in OOo writer. Some action trigger a bug either in OOo, either in ibus-anthy:

Any single kana (hiragana/katakana) with space before and after) are automatically doubled on pushing the enter key.

eg. I type　the particle "の" after かれら. When I push Enter after entering the particle, it ends up like this: かれら　のの

Workaround: either back space after any single kana entry (quite annoying). Either quit OOo and re-open (until the next occurrence).

I have no idea if it is OOo related, or i-bus related, (or worse: related to my system only - old 8 y.o. notebook with Ati radeon 9200 and pentium VI)?

Version-Release number of selected component (if applicable):
-F-15 LXDE Spin
-Ibus IBus 1.3.99.20110908 with French-Canadian & Japanese-Anthy input
-OOo 3.3.0 Oracle (I have installed the rpm) - default installation, without any tweak.

How reproducible:

Always (when mixing language - French & Japanese)

Steps to Reproduce:
1. Open OOo writer
2. Switch ibus from Japanese to French Canadian or simply Japanese on/off (ctrl+j)
3. Suddenly, any single kana are automatically doubled on input (Enter key)
  
Actual results:

When I open a new document, it all goes fine along the first few Japanese input, until something triggers this bug.

Additional info:

Changing the font, style, disabling the add-on, the JRE, did not change anything. The problem still occurs. I doubt installing the LO version would change anything.