How to return control to a function?

Question

go

Using the library https://github.com/gizak/termui I'm trying to implement a system menu with switches, the function that draws when switching works, but in order to switch you need to press the key twice, the question is how to transfer control from one function to the other through the channel, as I understand it, on the first press I exit the function and only on the second press the processing is switched.

func (self *consoleUserInterface)ListenAndServer() {
  ticker := time.NewTicker(time.Second)
  DrawInfo(self)
  termui.Render(self.TabPane, self.info)
  events := termui.PollEvents()
 for {
    select {
      case e := <-events:
      switch e.ID {
      case "q", "<C-c>":
        termui.Close()
        return
      case "d":
        ticker.Stop()
        self.TabPane.FocusRight()
        termui.Clear()
        termui.Render(self.TabPane)
        self.RenderTab()
      case "a":
        ticker.Stop()
        self.TabPane.FocusLeft()
        termui.Clear()
        termui.Render(self.TabPane)
        self.RenderTab()
      }
    case <-ticker.C:
      DrawInfo(self)
    }

  }
}
func (self *consoleUserInterface)RenderTab(){
  ticker := time.NewTicker(time.Second)
  var done = make(chan bool,1)

 loop:switch self.TabPane.ActiveTabIndex {
    case 0:
      go func() {os.Stdin.Read(make([]byte, 1)); done <- true}()
   		for  range ticker.C{
        if len(done) > 0{
          <-done
          break loop
        }
        DrawInfo(self)

      }
    case 1:
      termui.Render()

  }
  return
}