Problem 1: Input window's position is put to the top-left corner of the screen. Refer to the attached IM-Position.jpg. It is far from the insetion point and is difficult to user to find.
Reproduce:
1. Open 'Notepad' demo from jdk1.6.0_02/demo/jfc/NotePad
2. Input the following Chinese PinYin continuously in NotePad.
"womenyiqiquyuanmingyuan"

Problem 2: If you want to change one of charater by click 'backword arrow' the whole insertion bar is hidden under "NotePad". Refer to the attached IM-Window1.jpg, the insertion window is hidden under 'NotePad' Move 'NotePad' then the insertion window show up. Refer to IM-Window2.jpg.
Reproduce:
1. Open 'NotePad'
2. Input the following Chinese PinYin continuously in NotePad.
"womenyiqiquyuanmingyuan"
3. Click 'Left Arrow' to change one of them

These problems are reported by my colleague, Rebecca Liu. She found them when testing Netbeans. And we found they can reproduced in many applications. NotePad, InstantMessenger.