In our applications we had messages layout customized in separeted panels for ERROR/FATAL, INFO and WARN. When migrating from version 3.3.3 to 4.0 we see that the level attribute no longer exists. What do we need now to separate messages in different panels?
it looks like the level property is not available anymore. You could do a hack and misuse the component-property to control the display/severity by that. Another solution would be using different css classes for the different severities.