J.O.O.N.A.S. not working? Check the robot and catcher

First, check the version

In the developer’s 1.0.4 notes, J.O.O.N.A.S. was changed to work without nearby players and launch capsules toward the nearest catcher while moving on. Reports from launch may describe the earlier behavior.

If the game is already updated, an old fix is not proof of the cause of a current failure.

Follow one complete cycle

These are diagnostic checks, not confirmed fixes for every save.

1. Use the map and robot information panel to locate the unit and its current activity.
2. Observe whether it cleans, whether its bin is full, and whether it launches a capsule.
3. Inspect the catcher and downstream conveyor for a backlog.
4. Test a short clear route and record your version and the observed symptom if the problem persists.

Robot capacity is not catcher capacity

The analyzed robot prefab has a 60 kg capacity field. The developer’s 1.0.4 notes report a 100 kg catcher capacity. They are separate components and should not be treated as one combined buffer.

Find out whether cleaning or delivery stopped

Start by watching a single J.O.O.N.A.S. unit instead of changing several machines at once. A robot that is moving and cleaning but whose catcher is full presents a different problem from a robot that never begins a route. Record the current sector, bin indication and the state of its nearest catcher.

The developer’s 1.0.4 notes describe a red flashing indicator when the bin is full and an improved map showing robot activity. These are useful observations to collect, but a visible full indicator alone does not identify why a particular save is blocked.

Check the catcher and what follows it

Look for material accumulating at the receiver and then follow its output toward the next connection. If a capsule or downstream machine stops, the receiver may not be the original cause. Compare the behavior with a short, clear route before assuming that increasing the robot’s capacity will help.

The local build contains a 60 kg robot-capacity field. The developer’s patch note describes a 100 kg catcher; they describe different objects and should not be combined into a single 160 kg operating capacity.

What changed in patch 1.0.4?

The developer says J.O.O.N.A.S. no longer needs a dock trip to deliver, can launch toward the nearest catcher while moving on, and continues working when players are not nearby. Those are dated patch statements; our local build commit has not been independently matched to that patch number.

If a current save still behaves differently, note the game version, platform, solo or multiplayer status and a short reproduction sequence. A historical report is useful context, but it cannot establish whether the same bug persists today.