I currently have an intent that is triggered through dialog delegation. This intent is just to collect information in one required slot so I have set it with auto delegation enabled. The slot is also a custom slot type I've created with a small list of accepted values. I've then set the slot with a validation rule to only accept the slot type's values and synonyms.
The problem is that the validation speech is never triggered. When triggered the intent first gives the slot filling speech prompt and if an invalid response is given, it then repeats the same slot filling speech prompt. If another invalid response is given, there are no further utterances. Invalid responses can continue to be given with no further response. If a valid response is finally supplied, the intent is then completed as normal. Why is the speech prompt given, but never the validation rule text? Has anyone else run into this issue?