[CentOS] CentOS 7 workstation, mutter CRITICAL...

A fully updated, just built last month, CentOS 7 workstation. The system has 16G of ram, and the real work is done on servers.

I'm seeing a ton of complaints in the logs. Feb 10 18:06:00 <workstation> gnome-session: (gnome-shell:3248): mutter-CRITICAL **: meta_window_raise: assertion '!window->override_redirect' failed

I found a bug report from last summer, but as I said, all updates are done.

Also, is there a bug in the firefox package? Feb 10 17:07:51 <workstation> <user>: IcedTea-Web java error manual log: Feb 10 17:07:51 <workstation> <user>: Application title was not found in manifest. Check with application vendor

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