Cinnamon applet iconfilechooser respond slowly

[sonichy]

Scroll slowly, text filter slowly.

{
  "menu-icon" : {
    "type" : "iconfilechooser",
    "default" : "cinnamon-symbolic",
    "description" : "Icon",
    "tooltip" : "Select an icon to show in the panel.",
    "default_icon" : "cinnamon-symbolic"
  }
}