Just hit this error when building with the latest fontmake 3.9.0
Compiling UFO failed: <features>:1:8: The following feature file should be included but cannot be found: ../fea/MyFeatures.fea

I'm not sure where this got broken, but in previous versions this was not an issue. FWIW, my .ufo files are in a folder called 1-drawing and my feature file: MyFeatures.fea is in a parallel folder called fea, and in each .ufo file I have include(../fea/MyFeatures.fea); Not sure if it matters, but my designspace file myTypeface.designspace is in another parallel folder called designspace. All of these folder (1-drawing, fea, and designspace) are in the same enclosing folder. So I can't figure out where fontmake is expecting the features to be located now.

If I generate from RoboFont, my features are included without issue. Same when I preview my features using the FeaturePreview extension. I would expect fontmake to match this behavior.

This used to work in fontmake 2x, I'm not sure where this changed. This is a bug, right?