Shelly i4 Input 0 not working

Hi,

i have several i4 and a Problem with one of them:

Every input Button triggers a automation. It works finde from 1-3 but not for 0. If i press 0 i can see that i pressed it in HA but it does not start the automation. If i change the automation so that another button triggert it, the automation works well.
What coud it be that the Button press is registered but the Automation does not start?

Kind regards,
Dominik