@Kai
I attempted this on my build #1506 and got the following message:
openhab> feature:install openhab-iconset-classic
Error executing command: Error restarting bundles:
Exception in org.eclipse.smarthome.io.rest.sse.internal.SseActivator.start() of bundle org.eclipse.smarthome.io.rest.sse.
EDIT: Even though i received the message above, I can confirm that the icons are now appearing correctly.
One other thing i’ve noticed since upgrading to #1506 is that everytime i send a command from the sitemap i get the message at the bottom of the screen “Offline: waiting for connection to become available” with the following in the error logs:
2019-01-23 09:09:08.186 [ERROR] [e.internal.WriterInterceptorExecutor] - MessageBodyWriter not found for media type=text/event-stream, type=class org.glassfish.jersey.media.sse.OutboundEvent, genericType=class org.glassfish.jersey.media.sse.OutboundEvent.