Output disappears

https://aws1.discourse-cdn.com/mcneel/uploads/default/original/3X/3/4/3437be92abb05242dc859659fb4c0e1a1f48d530.mp4 Hi.

Sometimes I’m having this issue.
After running the Kangaroo 2 the outputs disappear.
I thought it may be of tolerance by I tried changing it also changed the units and did not help.
What’s happening?