Density ignored when converting PDF -> PNG

[logidelic]

Calling something like:

imagemagick.convert({srcData:pdfData, srcFormat:'PDF', format:'PNG', density:300, quality:100}, function(err, buffer) { ... });

The density argument is complete ignored. I also tried '300x300' and some other formats, but in all cases it was ignored. On the other hand, executing imagemagick from the command-line works correctly:

convert -density 600x600 -quality 100 ...

This is on Windows 10.

[hannupekka]

Same with colorspace.