2.4.1 – Is Offset Curve filter bugged or just terrible?

Glyphs
1
  1. Why does it expand the path itself but then adds some sort of second, live expansion outside the path, a la Illustrator?
  2. Why you cannot undo it anymore?
  3. Why does it apply effect to ALL glyphs?
  4. Why does it slow system to a crawl and eventually crash the app?
2

The gray extra outline is the ‘Show offset preview’ from the view menu.

3

Thanks. What is the intended functionality? Could you link to its changelog?

4

This “Preview Offset” reporter is used if you have a “Offset Paths” filter in your instances: https://glyphsapp.com/tutorials/monoline