I haven’t seen this topic come up in past forum posts, but this has now happened a few times to me. Basically, the bar numbers listed at the start of each new system are getting off from the actual bar numbers. In the screenshot I have attached here, you can see that the rehearsal number (which is correct) says measure 169, but the small bar number says 171. This has also happened in some of the parts in this piece, but not all of them.
I am very confused and would appreciate any help!