handle press key ctrl + whitespace not show autocomplete

[khoand040792]

i have a problem when i handle press key ctrl + whitespace show autocomplete at specified in string, but autocomplete not be triggered, even though i had added triggered characters before.
please help me.
my code:

[jukben]

Hi, could you please create repro based on this https://codesandbox.io/s/k34153yp0v for example? 🙏