Hello! Some common mistakes I see is people mixing shape cast result with ray cast result. Also mistaking how the collision filters work. Feel free to shoot me something over in Discord
I tested and found the issue / reported to Kindeyegames / Mikal. It should be fixed now in the latest release just posted:
https://kindeyegames.itch.io/construct-3-cannon/devlog/800391/fix-cast-fix-shape...