Bug with colision

  1. Go to Edit → Project Settings → Collision (Under Engine Tab)
  2. Create a new Object Channel and set the default response to “Block”
  3. Go to your character, select the mesh, go to the collision tab and set “Collision Response” for Weapon to “Ignore”
  4. Do the same for everything that might be interfering with the collision (E.g. player capsule)