Metric labels with custom text are not showing as expected

[pwidanka]

I'm submitting a Bug report

Your Environment

Software	Version(s)
Angular	9.0
Angular-Slickgrid	2.18.6
TypeScript	3.75

Describe the Bug

I wrote about this issue on the stackoverflow.
I try to change a metric label in footer

Steps to Reproduce

I use customFooterOptions to change metric label in this way

this.gridOptions = {showCustomFooter: true,
  customFooterOptions: {
    metricTexts: {
      items: 'myItems',
      of: 'myOf',
    }
  }
}

Expected Behavior

I expected see "2 myOf 2 myItems" in my footer

Current Behavior

Nothing changes. I see default text in footer

[ghiscoding]

This is now fixed in latest version 2.18.x.

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