Inputrefselector does not execute the on change and on not found MF when Not Found

Hi

I make use of the add on InputRefSelector to check whether there is an object in DB like filled in.

When using the inputrefselector and filling  a value that is found,  the OCH MF works okay when selecting or tabbing it.

1 - But when there is not an existing value found, I expect that the On Not Found MF or On Change MF would be executed, but those are not working. How could this come? Something with the delay which I assumed as Milliseconds (tried different delays though)?  

2 - When there is not an existing value found and I tab to the next field, the filled in value is deleted automatically. Why?

Settings:

search method: starts-with

autocomplete: yes

search on empty input: yes

searching on empty focus: no

delay: 7