The Log View in Fuse IDE is targeted to work with any Karaf based container, eg SMX, Karaf, Fuse ESB, Fuse MQ, etc.
It do have a slight delay upon initializing the log viewer. And hence why the log view may be empty.
And IMHO the view should be improved to show which active connection it displays, as when you have multiple containers connected it may not be so easy to spot which one you browse currently.
And yes we are also fixing some bugs etc so the upcoming 7.0.1 release should have a better Fuse IDE release.