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The emptyText is applied to in-place editor when it is submitted with `null` or `undefined` or `empty string`. If you clear the DropDownList input data, null value is updated into dropdownlist alone (it is not reflected to In-place Editor’s value property). After submitting the editor, value property is set as null and emptyText will set to DOM.
Refer below documentation link for more details
We have prepared sample for your reference, check the below link
In the above sample, open an editor then press clear icon in dropdownlist component, now you can see the input is cleared. Then click outside of In-place Editor element, value will submit because sample configured with actionOnBlur as Submit. emptyText property value of 'Select value' is now set to DOM, but it is not updated in editor value property. if you open the editor again, the last updated value in the value property will be assigned in the dropdown's input