We have installed TS40b18 and the behaviour of notifications seems to be changed slightly. For example I have defined two notification rules - the first one sends the notification to the task's assignee while another rule (basically the same) notifies the task's submitter. Prior to beta18, when I were both the task's submitter and assignee I received two notifications. Now I've received just one. In the case of another task I fit even three notification rules and again got just one notification. Is it a new feature or a bug?
If it is a feature I agree it is quite usefull not to get more than one notification. But in this case I would suggest to add a "priority" field to the notofication rules in order me to be able to define the order the rules are evaluated in.
