Steps to Reproduce

  <combobox autocomplete="true" autodrop="true" onFocus="self.open()">
    <comboitem value="auto" label="${self.value}"/>
    <comboitem value="authorize" label="${self.value}"/>
    <comboitem value="beta" label="${self.value}"/>
    <comboitem value="car" label="${self.value}"/>
  </combobox>

1. copy the word auto
2. open context menu > paste (right-click inside the combobox, paste with "paste")

Current Result

it doesn't highlight "auto"
 

Expected Result

auto is highlighted
 

Debug Information

• use InputEvent.inputType to detect paste/drop operations on the combo input and trigger the highlighting