My model contains data that are multi-dimensional, and my first attempt was to implement this as a regular C# multidimensional array similar to this:

object[,] matrix3x3 = new object[3,3];

When trying to access this type of object from a template, Handlebars.Net threw an exception complaining it could not convert from object[ , ] to object[].

Then I changed my model implementation to jagged arrays (similar to this):

object[][] matrix3x3 = new object[3]; for (row = 0; row < 3; ++row)    matrix3x3[row] = new object[3];

This works just fine with Handlebars.Net.

Question: Is the lack of support for regular multidimensional arrays intentional, or is it a missing feature or bug?

As regular, multidimensional arrays are more efficient, at least for 2D arrays according to C# guidelines, I think it is a good idea to add support for it. It will also help avoid having to change the implementation of an already existing model.