An issue when I run mapping fields with Google chrome

I am the new one to GoJS, when I run the example of Mapping Fields, the results like,
see the text, the text head be cutted, how can I fix this?

It looks like you are limiting the size that the TextBlock is allowed to have.

Perhaps you are seeing a width and height or desiredSize on the TextBlock, which is smaller than the font.

Perhaps you are using a table panel that is setting certain column or row sizes.

I suggest trying to simplifying your node template and item template until the issue no longer appears, to isolate exactly what it is.