Tools stop when you stop, and background jobs keep running
A command that starts a background job returns right away and leaves it running, Stop halts searches at once, and a failed helper start leaves nothing behind.
A command that started something in the background made the agent wait out the full time limit and then killed the job. It now returns as soon as the command finishes and leaves the job running.
Pressing Stop halts a file search at once instead of letting it walk the whole folder, and a search that finds nothing says which large or binary files it skipped.
Deleting a session forgets its helpers, and a helper that fails to start removes its session and folder instead of leaving a ghost behind.