ComboBox reset value

[paoloalba]

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After selecting a value from the combobox, I can not successfully clear the field value from the GUI. This means that if I have a background process which depends on the value of the combobox, after selecting a specific value, the background will always see such value until I do not assign another one to it, that is not an empty string.

Is this a desired behaviour? I am using ipywidgets==8.0.0b1 on Chrome with jupyter lab Version 3.2.8