inDateRange with only one date not working as expected

Describe the bug As stated in the documentation (operator inDateRange) "If only one date specified the filter would be set exactly to this date". Instead, it seems to consider the only date provided as a lower bound.

To Reproduce

{
  member: "Posts.time",
  operator: "inDateRange",
  values: ['2015-01-01']
}

Expected behavior Same as

{
  member: "Posts.time",
  operator: "inDateRange",
  values: ['2015-01-01', '2015-01-01']
}

or

{
  member: "Posts.time",
  operator: "equals",
  values: ['2015-01-01']
}

Version: 0.26.77