FHEM venetian blinds - first delayed cmd gets deleted

[ctc]

When TargetHorizontalTiltAngle and TargetPosition is send from homebridge to fhem, the first delayed cmd will be deleted.

Happens in line 2461 in index.js:

  delayed: function(mapping,value,delay) {
    if( !this.delayed_timers )
      this.delayed_timers = {};

    if( typeof delay !== 'numeric' )
      delay = 1000;
    if( delay < 500 )
      delay = 500;

    var timer = this.delayed_timers[mapping];
    if( timer ) {
      //this.log(this.name + ' delayed: removing old command ' + mapping.characteristic_type);
      clearTimeout( timer );
    }

How to avoid this or how could the clearTimeout be avoided and do not harm other use cases?