Why is this happening suddenly?

This monitor was working then it stopped.  I have closed and reopened DBVis and it still does the same thing.

Clearly there is a series selected.  Other views look fine:

Second screenshot is wrong, should be this:

Hi Scott,

I didn't see this until after I answered your ticket. I now see your reply that it "fixed itself". I love it when that happens :-)

Best Regards,

Hans