Gateway script issue on 8.0.13

I try to add a tag event script to my project and after saving my project I don’t see my script into the Status/Gateway Scripts.

I did some test and I also add Timer, Message Handler, Startup and Shutdown scripts, ONLY the startup and shutdown is shown into the Status/Gateway Scripts ???

Also, I want to know why the Update events are not shown into the Status/Gateway Scripts, No tab for it.