Player chat unavailable, passive effect icons flickering

There's a new UI for the chat window, among other things.  When I try to talk to other players, or view chat history, I get a white screen that says 'page unavailable'.  I also currently wear a Turtle Shell.  The water bubble icon in the top right is now flickering constantly.

I would include an image of the 'blank' chat window, but porting screenshots from the Switch, to the PC I'm using to post this, is an immense pain.