BxActions is already updated. I can confirm that disabling the button work with using the app, although, you see the bixby home for less than a second. then it will take you out of it. I hope that you will be able to totally hide bixby home, I don't want to see it at all.
Also, the app is not yet fully functional. I hope it will get better.
For the users, please upvote and comment on Reddit here
Samsung should at least give us back the option to disable the button.