[QGIS-Developer] Raster calculator in Processing model

[matteo]

Hi devs,

I'm facing some trouble with the raster calculator (native) in
processing models.

In my model I have a DTM in input, I'm calculating the slope of it and
then I want to use the calculator to extract only the slopes > 15.

The resulting layer is empty and filled only with -3.40282e+38 values.

Same operation outside the modeler works nice.

Could someone confirm this?

Thanks

Matteo