When working within a SAS Life Science Analytics Framework 5.4.1b instance that has R Version 4.4.0 installed, an executing R program caught in an endless loop cannot be terminated using the Cancel button.
The Cancel button might be effective in terminating a long-running R program, but not a program that is caught in an execution loop.
Note: The reported behavior is new within R Version 4.4.0.
The only available solution to the reported behavior is to terminate the active R session within SAS Life Science Analytics Framework.