Bracket across staves when adding new staff

When I add a staff above or below my two normal piano staves which use a straight thick bracket, I want that thick bracket to cover the added staff as well, and yet it will not. What do I do to address this?

When adding staff above:
bracket one

When adding staff below:
bracket two

Have you got a bracket/barline change earlier in the flow that would therefore be taking effect at this point? If so, what happens when you reset bracketing at this position?