At the moment (SL 3.0 beta 3) there are some regressions compared to version 1.8:

1. Dismiss Alert accept=${FALSE} leaves the alert open but it in 1.8 it closes it regardless the value of accept. It's behavior to accept by default and require configuration to dismiss is strange, but we already have Clean up keywords related to alerts #933 about that and other alert related oddities.

2. Dismiss Alert always returns the message of the alert but in 1.8 it returns true or false depending was the alert close or not. This is strange behavior too.

3. Confirm Action accepts the first alert but subsequent alerts are dismissed by default. In 1.8 all alerts were accepted by default.