From 5454989987ff899973fb102e2d4ad8e1e30bc465 Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Wed, 24 Aug 2022 13:30:09 -0600
Subject: [PATCH] [ttGlyphSet] Copy glyph components before shifting

Fixes https://github.com/fonttools/fonttools/issues/2774
---
 Lib/fontTools/ttLib/ttGlyphSet.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Lib/fontTools/ttLib/ttGlyphSet.py b/Lib/fontTools/ttLib/ttGlyphSet.py
index be26215b7..67cf4706c 100644
--- a/Lib/fontTools/ttLib/ttGlyphSet.py
+++ b/Lib/fontTools/ttLib/ttGlyphSet.py
@@ -153,6 +153,7 @@ def _setCoordinates(glyph, coord, glyfTable):
 
 	if glyph.isComposite():
 		assert len(coord) == len(glyph.components)
+		glyph.components = [copy(comp) for comp in glyph.components]
 		for p,comp in zip(coord, glyph.components):
 			if hasattr(comp, 'x'):
 				comp.x,comp.y = p