Issue Summary

Editor cursor jumps back to the start of the line when performing Japanese language conversion on Linux

Steps to Reproduce

On Linux

1. OS > Language support > install 日本語(Japanese)
2. OS setting > Keyboard > add "Japanese(Mozc)"
3. open browser
4. create confluence page(new editor)
5. input "Japanese" and perform Japanese language conversion
6. if enter [space] key, conversion is done.
7. cursor back to the top of the line.
8. If enter a word first, and input after a word, it works fine. (cursor doesn't back to the top of the line)

OS platform: Ubuntu 20.04, Ubuntu 22.04 LTS, Ubuntu 22.04.2 LTS, Ubuntu 20.04.6 LTS
Browser: Chrome
IME: Japanese(IBus - Mozc)

Expected Results

cursor does not back to the top of the line, and select conversion from list.

Actual Results

cursor back to the start of the line. 

Workaround

Currently there is no known workaround for this behavior.