Error messages features

[Schmal (Artur Schmal)]

Hey!

Glyphs is telling me something is wrong with my glyph count in a bunch of features that deal with figures.
Take the lnum feature for example:

Have a look at the target and substitute classes:

Why could Glyphs be reporting that there’s 22 glyphs in the substitute class?

[FlorianPircher]

There are two class definitions for TabLining in the Classes section. Delete one of them.

[Schmal (Artur Schmal)]

Holy moses my eyes are letting me down!