jekyll: The where filter fails on values with spaces in them

• I believe this to be a bug, not a question about using Jekyll.
• I read the CONTRIBUTION file at https://jekyllrb.com/docs/contributing/

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• I am on (or have tested on) macOS 10.11.6

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• It was another bug.

My Reproduction Steps

Using Jekyll 3.2.1 with no error output.

I got a json file in the _data folder named test.json with the following content

[
  {
    "name": "one"
  },
  {
    "name": "two-with-dashes"
  },
  {
    "name": "three with spaces"
  },
  {
    "name": "four_with_underscore"
  },
  {
    "name": "five+with%special#characters"
  }
]

Now when I try to use the where filter with each of those values via this liquid code:

{% assign one = site.data.test | where: "name", "one" %}
one: {{ one }}<br>
{% assign two = site.data.test | where: "name", "two-with-dashes" %}
two: {{ two }}<br>
{% assign three = site.data.test | where: "name", "three with spaces" %}
three: {{ three }}<br>
{% assign four = site.data.test | where: "name", "four_with_underscore" %}
four: {{ four }}<br>
{% assign five = site.data.test | where: "name", "five+with%special#characters" %}
five: {{ five }}

I get this output:

one: {"name"=>"one"}
two: {"name"=>"two-with-dashes"}
three: 
four: {"name"=>"four_with_underscore"}
five: {"name"=>"five+with%special#characters"}

Please note the key three with value three with spaces is not found by the where filter.

The Output I Wanted

one: {"name"=>"one"}
two: {"name"=>"two-with-dashes"}
three: {"name"=>"three with spaces"}
four: {"name"=>"four_with_underscore"}
five: {"name"=>"five+with%special#characters"}