Browser staying open

I don't know if this issue has been addressed before, or if it's even an issue, but since the 2017.04 update my browser is open when I load a project file, even if I saved the project with the browser closed.  It's no big deal, as I only have to close the browser if I don't want it open.  It has nothing to do with a lens or screenset, as I don't use either of them in my projects, and I've checked them to be sure they weren't involved.  Is anyone else seeing this behavior, and if so, is there anything I can do to change it?  Thanks in advance for any replies.