Redrawing of axis label with TLatex text fails

If using special characters in axis labels, redrawing of it fails. If using

  auto hist = new TH1F("name","title",1,0,1);

  hist->GetXaxis()->SetBinLabel(1,"t#bar{t} hadronic");

  hist->Draw();

  gPad->RedrawAxis(); //trigger the bug

The last line will trigger the addition of a spurious line on top of the label.