diff -Naur cairo-1.16.0/src/cairo-composite-rectangles.c cairo-1.16.0.patched/src/cairo-composite-rectangles.c
--- cairo-1.16.0/src/cairo-composite-rectangles.c	2018-08-17 03:10:53.000000000 +0200
+++ cairo-1.16.0.patched/src/cairo-composite-rectangles.c	2021-09-26 15:52:04.410502567 +0200
@@ -431,18 +431,6 @@
     if (! _cairo_composite_rectangles_init (extents, surface, op, source, clip))
 	return CAIRO_INT_STATUS_NOTHING_TO_DO;
 
-    /* Computing the exact bbox and the overlap is expensive.
-     * First perform a cheap test to see if the glyphs are all clipped out.
-     */
-    if (extents->is_bounded & CAIRO_OPERATOR_BOUND_BY_MASK &&
-	_cairo_scaled_font_glyph_approximate_extents (scaled_font,
-						      glyphs, num_glyphs,
-						      &extents->mask))
-    {
-	if (! _cairo_rectangle_intersect (&extents->bounded, &extents->mask))
-	    return CAIRO_INT_STATUS_NOTHING_TO_DO;
-    }
-
     status = _cairo_scaled_font_glyph_device_extents (scaled_font,
 						      glyphs, num_glyphs,
 						      &extents->mask,