Smart Component disappears after decomposing it and Undo

Glyphs
1

I reproduced this issue in Glyphs 4.2 (build 4203).

Smart_Component_Undo_Test.glyphs (1.5 KB)

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image478×838 31.4 KB

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image440×832 29.1 KB

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image458×824 30.9 KB

Steps to reproduce

  1. Open the attached Smart_Component_Undo_Test.glyphs file and open glyph A in Edit View. It contains a Smart Component that references _part.Triangle, with its Width axis set to 50.

  2. Choose Glyph → Decompose Components.

  3. Press ⌘Z once.

Undo removes the paths created by decomposition but fails to restore the original Smart Component, leaving glyph A empty.

Restored by Undo in my testing

  • Regular components.

  • Smart Components whose axis values had never been changed after insertion.

Not restored by Undo in my testing

  • Smart Components with an axis value that had been changed at least once, even if all axis values were reset to their defaults before decomposition.