What is shown as the first beat of 17 is supposed to be the 4th beat of 16.
This is the end of a verse that has a pickup beat, though when I wrote it out I wrote that pickup at the end of a full 4 beat bar. I’ve since added the pickup bar and adjusted the piece, though this bar was short even before the pickup was added.
How do I identify (what do I click on) to see and change what this bar thinks it is?
Ah. That did it. I now have a nice 4-beat bar 16 and the rest of the music adjusted nicely. Can you tell how the situation developed and how I can keep it from happening?
I was able to reproduce your situation by selecting the 4th beat in a bar, opening the Bars popover with Shift+B, typing | and hitting enter. I don’t know if these were the steps you followed; there are other ways to get there.