It's very likely due to 2 reasons:
– Sometimes people type slower, and the results are displayed between the keystrokes, which means the phrase yielded results, so it's statistically relevant.
– The input is noted whenever the ajax request is sent, and not in a separate process after the search is over – this is a known issue, which will be fixed in the upcoming release.
After the upcoming update is released, you should start seeing more 'whole' phrases instead of partial ones.Best,
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