after Instantiate(textmeshpro) my Instantiate(particle effect) blocks GUI

     IEnumerator Die()
     {
         _hasDied = true;
         _scoreManager.MonsterPoints(_monsterPoints); 
         GetComponent<Animator>().enabled = false;
         GetComponent<SpriteRenderer>().sprite = _deadMonster;
 
         var ftext = Instantiate(_FloatingTextPrefeb, transform.position, Quaternion.identity); //floating text spawnen
         ftext.GetComponent<TextMeshPro>().text = _monsterPoints.ToString();
 
         int index = UnityEngine.Random.Range(0, _audioClipsDeath.Length);
         AudioClip clip = _audioClipsDeath[index];
         GetComponent<AudioSource>().PlayOneShot(clip);
 
         yield return new WaitForSeconds(1);
         Instantiate(_ParticlePrefab,transform.position,Quaternion.identity);  //death effect spawn
         gameObject.SetActive(false);

i added the 2 ftext -> floating text lines and now the particle effect that starts when the object gets deactivated blocks my GUI text. when i delete the 2 lines everything works fine.