message: Should not call reveal if one of PDF viewers is visible.
diff: @@ -345,6 +345,11 @@ export class Viewer {
  if (!panelSet) {
  return
  }
  + for (const panel of panelSet.values()) {
  + if (panel.visible) {
  + return
  + }
  + }
  const activeViewColumn = vscode.window.activeTextEditor?.viewColumn
  for (const panel of panelSet.values()) {
  if (panel.viewColumn !== activeViewColumn) {
  