I can’t make the anchors working for some reason.
the automatic alignment is enabled and the anchors have the right names too.
Here’s a screen cast to help you understand what’s happening.
Also, I’m currently on Glyphs v1.4.4. and @GeorgSeifert mentioned that there’s a v.14.5?
I bought it through the app store and unfortunately there’s nothing to update there. Just mentioned this because I’m not sure if somehow could solve the problem.
I had a look at your file. Automatic alignment was disabled for the whole font in File > Font Info > Other Settings. Toggle that setting and it should work again.