Search_value of Dropdown clears after typing


I would like to have a dropdown with dynamic options, however when I type a character, it gets remove instantly. It seems that the callback is execute once with the search_value typed, but then is executed a second time with an empty search_value, even though the only INPUT of the callback is the search_value.
Is the same than this issue:

Although updating the Dash version didn’t help.

Thanks for your help in advance! :slight_smile: