When performing a find query using the maxTimeMS option, documents are returned without fields. The problem seems to be that specifying this option is somehow interpreted the same as specifying the fields:[] option.

See the attached example. First try node max.js. This will return the full document with all fields. Next try node max.js 1000. This specifies the maxTimeMS: 1000 query option. Notice that the document is returned without the color property.

Add options.fields = []; at line 21, then run node max.js 1000. Notice that the full document is now returned despite having specified the maxTimeMS option.