Chinese input method error of JetBrains in Ubuntu environment

Time:2021-4-2

Problem expression
When using clion in Ubuntu, it is found that after inputting two characters with the IBus Pinyin provided by Ubuntu, the candidate box will disappear

terms of settlement
Uninstall IBus and its related components, install fcitx and Google Pinyin

Reference article
Installation of Google Pinyin input method in Ubuntu 20.04 LTS
The story between Ubuntu input method and idea
Problems of pychar Chinese Sogou input method in Hang, Ubuntu 20.04