Javascript Code node just times out

Questions
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2

Just tried switching to python and that seems to work e.g.

# Add a new field called 'myNewField' to the JSON of the item
_input.item.json.myNewField = 1
return _input.item

But with the same in javascript nothing:

// Add a new field called 'myNewField' to the JSON of the item
$input.item.json.myNewField = 1;

return $input.item;

Is there still a problem with TaskRunners as described here: Issue with Code Node Timeout in n8n Cloud - #6 by Kivema