Character can’t walk on object, after animation(sequence) complete

Maybe anyone can help me here? My problem is that my character can’t walk on mesh, after the animation complete. I can walk on it, without the animation, but after I made a new sequence with this object, it’s impossible to walk on it. I tried some thoughts and I end up with this conception. I can walk on it from the left or right side, but I can’t step on it from the bottom. Like invisible barrier, which was created in time, when sequence started. Barrier of the mesh shape, which is animated. Any suggestions what it can be?
Video example
BP of how the sequence starts. After I press “E” on a keyboard, near the box trigger.