When constructing a Typeahead with an array of strings as the object, each change brings up a list of options reflecting the input node's value before the change.

'' > no list
'a' > empty list
'ab' > list matching 'a'
'abc' > list matching 'ab'
'ab' [backspace] > list matching 'abc'
'abPASTED_TEXT' > list matching 'ab'
'abPASTED_TEXTc' > list matching 'abPASTED_TEXT'

Based on stepping through, it seems to be because componentWillReceiveProps is using this.state.entryValue to calculate the options, but the setState({entryValue}) in _onTextEntryUpdated hasn't yet been put into this.state at that point. As a result, even though the correct options are calculated in _onTextEntryUpdated, they're instantly overridden before the render occurs by a recalculation in componentWillReceiveProps using the previous state.