FallbackClassifier threshold always decrease after introducing new Intents and Training data to RASA

Hi All,

Every time time I introduce new intents and training data to RASA, I need to change my FallbackClassifier threshold value and it came down to .20.

I am little worried by decrease in threshold value, is it expected behaviour of RASA or am I doing something wrong ?

Can you please suggest or help me on this.

Thanks in Advanced