message: Set / reset mouse position around imgui begin call
diff: @@ -850,8 +850,8 @@ void TipWindows::set_tooltip( const char *name, ImVec2 *pos, const char *str )
  ImGuiWindowFlags_AlwaysAutoResize;
  io.MousePos = *pos;
  -
  ImGui::Begin( name, NULL, flags );
  + io.MousePos = mousepos_orig;
  if ( name[ 0 ] != '#' )
  {
  @@ -872,7 +872,6 @@ void TipWindows::set_tooltip( const char *name, ImVec2 *pos, const char *str )
  ImGui::End();
  - io.MousePos = mousepos_orig;
  }
  }
  