Stacks has a hidden preference that is pretty awesome. It allows you to double click a stack title bar in order to toggle hide on that stack. In order to active this preference you will need to run the following command inside of the Terminal app on your Mac.
This command is different if you are running RapidWeaver from Realmac vs if you got it from Setapp.
# From Realmac
defaults write com.realmacsoftware.rapidweaver8 stacksHideOnTitleDoubleClick 1
# From Setapp
defaults write com.realmacsoftware.rapidweaver-setapp stacksHideOnTitleDoubleClick 1If you enable this preference and decide that you would like to disable it, you can running the following command in Terminal.
# From Realmac
defaults write com.realmacsoftware.rapidweaver8 stacksHideOnTitleDoubleClick 0
# From Setapp
defaults write com.realmacsoftware.rapidweaver-setapp stacksHideOnTitleDoubleClick 0