Learning algorithm is sometimes too aggressive when punctuation is committed

What steps will reproduce the problem?
1. Install Mozc 2.16.2027.102 into Android.
2. Type "あ" and submit "あ"
3. You will see "。" in the suggestion list. Tap it to submit within a few 
seconds.
4. Type "あ".

What is the expected output?
After step 4 "あ。" shouldn't be listed.

What do you see instead?
After step 4 "あ。" is listed.  Screen record is attached to explain this 
behavior.

Original issue reported on code.google.com by yukawa@google.com on 25 Jan 2015 at 6:10

Attachments:

actual.mp4

axsann / mozc

Learning algorithm is sometimes too aggressive when punctuation is committed #275