I have a GridPane which I do setVgap(5) on. I add say 10 children. All works just fine.

I then delete some of the middle children, say children 4, 5 and 6. The GridPane removes the children, but leaves the 5 pixel vgap, so after deleting children 4, 5 and 6 I have a 15 pixel gap between child 3 and 7.

I am pretty sure a bug like this has been reported in the past, but couldn't find it. Hence the new bug report. Sorry for no code example, but it's buried in the middle of a much larger app.