Inputting Chinese characters is not accepted on first attempt but accepted the second time

OS: opensuse Leap 15.1 updated
LO: with Asian fonts installed and enabled.
How to reproduce:

  1. open writer, and input some Chinese characters. The characters don’t appear and the cursor moved back to where you started.

  2. Type the same thing again, the characters appear as normal.

  3. Move your cursor to somewhere else and type some Chinese characters and find the same bug happens again, and you need to type twice in the same cursor position to register your input.

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