Did Cursify break?

I noticed now there’s no difference between the cursify and slant options in transform, in the past I remember Cursify would fix the extrema and handles?

Do you have set the vertical and horizontal stems in font info?

Yes

Maybe there is a misunderstanding. Cursify does not reset extrema.
http://www.glyphsapp.com/tutorials/easy-oblique

You’re right! My mistake: I was thinking about RMX Tuner, which resets extrema.

Thanks.