Because for whatever reason you are colliding as soon as you start. You set the collision on the actor and having it “blockall” which includes your actor so this is most likely why this is happening. To generate overlap you don’t want to use “blockall” you want to use “overlapall” or “overlapalldynamic”. However, it may be best to set it to “custom” then expand the collision settings and select only the things you want your collision to overlap with and set the rest to “ignore.”