Rhino and Grashopper not responding when Kangaroo is running

When running a computation with the bouncy solver it seems that I cannot turn it off. The only way is to close Rhino or load another file by drag and drop and then, stop the solver and then change the file and turn off the button. That did not happen some time ago I think. Rhino 7.14.

Any help or update would be much appreciated. Thanks!