Adding a class causes Glyphs to crash

3095 - Create a new font, open features, click the plus sign next to classes, select new empty class and Glyphs crashes

Same problem with a file in progress (on 3095). Reported here by @jansindl3r is exactly how to replicate.

Can you point me to the report?

@GeorgSeifert this is it I guess

Now I understand, you mean it also crashes while an existing file.

I have the same issue.