Since it’s early in the season, it may be ice related. I wonder if anyone has made it to Hubbard yet this year? We went in 2019 at the end of May and there was so much ice we couldn’t get as close as they normally do. It was still magnificent to see the ship surrounded by ice particles.
As a side note, we prefer Hubbard to Glacier Bay. Been to both many times and Hubbard is our preference.