I created a scene with a rope (SoftBody) and two box with Collision only. The rope attracted to the boxes but I don't know why.
I created two videos: https://youtu.be/CWTQKD52Csg and https://youtu.be/BQJUS1dK6Vg
The Blender file: https://drive.google.com/file/d/1-33uqCH0g1cX0kcNvaC0VoW6tJxqkfVA/view?usp=sharing
Thanks.