Why yes, certain agency officers were having SHUTDOWN PREPARATION MEETINGS again. I'm still designated essential with that designation expiring on April 18th when filing season concludes. Appropriations for all agencies run out at 2359 ET on 2018-02-08.
If you're looking for a tax refund while we're shut down if we're shut down, you won't get it. No money can be paid out. Payments would be received in from taxpayers, though. Taxpayer Advocate Service won't be able to provide hardship help.