score:0

maybe you are looking for something like this. then again, this assumes title can accept a component. in most cases, title usually just accepts a string. i'd check to see the prop types or flowtype of the tab component.

_rendertitle () {
  return (
   <glyphicon glyph='time' />
  )
}

render () {
  return (
    <tab title={this._rendertitle} />
  )
}

score:5

my solution is with array:

<tab title={[<glyphicon glyph="briefcase" />, "briefcase"]}>

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