Did CC 2014.2 break textItem.size?

Scripts that worked before the update are now broken, and text layers created via script are all 12px. See this simple script:

var docRef = activeDocument;
var TextLabel = docRef.artLayers.add();
TextLabel.kind = LayerKind.TEXT;
TextLabel.name = "Test";
TextLabel.textItem.contents = "This text should be 50pt";
TextLabel.textItem.size = new UnitValue("50 points"); // other variations, such as TextLabel.textItem.size = 50 also fail.
TextLabel.textItem.font = "Monaco";

Any help? Thanks.