MindsetDesign

With the "expert" level activated in the Print Setup of Cura, expand the Material section and at the bottom should be "Nozzle Switch Retract Distance/Speed". You'll need to set the retraction distance for the switch nozzle function specifically and then select "Extruder 2" at the top and add those settings again to set it for both materials. It may be something else, but it sounds like that could be it if you're seeing it work for one and not the other. Good luck! -Brian