I can't find any help guides about the usage of the new beta "Validation Rule" feature.

I've tried to define a rule which alerts the agent when the ticket has some linked tickets. The rule reads as :

When "Associated Type" is not empty then Alert the agent with the entered text

The first issue on the rule definition process seems to be that the condition is being automatically repeated even it was only recorded once.

The second issue is that it isn't displaying any alerts when I open a linked ticket.

Am I using the validation rules incorrectly or is this a beta version hiccup ?