Ifttt_webhook_received doesn't fire events after update to 0.115

Hi there! I’m having a strange problem after upgrading ha from 0.114.2 to 0.115. I haven’t changed nothing but now the event ifttt_webhook_received seems to not be fired correctly.
The strange thing is that if i try to simulate the arrival of event using developer tools event section, nothing happens: no errors and no attended behaviour.
It’s strange, i can see one listener attacched to ifttt_webhook_received but seems that the event bus doesn’t receive the event…
Someone have ideas? I’m thinking to go back to the snapshot of 0.114.2 and downgrade the system…