Double barlines span to next staff when instrument inserted
Create a score with connected barlines (I used the classical orchestra template)
Add a double barline somewhere
Insert an instrument between instruments with connected barline (like between the oboe and clarinet)
Result Barlines below the added instrument are not connected to the instrument below it, except the double barline.
Expected Either all of the barlines are connected or none of the barlines are connected (like in 2.x).