Collisions detected once

  1. You never mentioned the C++ project was behind 1 month
  2. Without knowing why you are refusing to use the C++ project it made perfect sense to try and figure out the issue with not wanting to use a functioning project instead of troubleshooting one that isn’t working.
  3. I’m trying to help, others are more than welcome to jump in but no one has yet. It’s not like my “unhelpful” answer/questions are preventing others from helping you.
  4. Obviously if everything you say is true and nothing is changed between the projects your collision should work the same so my first thought was to use the project that isn’t broken.
  5. Those screen shots are useless for figuring out a problem with collision FYI. There is not one blueprint node or collision setting in them
  6. Post screen shots of collision settings, your spawning blueprint, your projectile etc and maybe someone will be able to help you