0.12.10 - WIndows - <undefined> object name on map log output

it seems to be an empty tile?
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placing obj_treasurechest 1408, 1152
placing obj_demonstatue 1920, 1120
placing (lessthan)undefined(greaterthan) 1824, 1952
placing obj_enemy 1792, 1792
placing obj_enemy 1920, 1696
placing obj_enemy 544, 352
placing obj_enemy 224, 1632

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