Why do a sound "hanging or lock" in some styles.

[Flemming M]

I have some styles that in some situation locked or blocked like a Windows program. One arr. sound - strings or Pad sound looked and will not stop sounding even if the start/stop is used. The Cord's sound is block. It will not change cords.
The only way too stop the sound is too shift to Songsmode or Soundsmode´. Saturday night on job I have too stop the dancing in one sekund cause the styles (Disco) was look. Nothing worked correct until I push the Song tab.