diff --git a/src/hb-ot-shape.cc b/src/hb-ot-shape.cc
index 68c512c7d..e21886182 100644
--- a/src/hb-ot-shape.cc
+++ b/src/hb-ot-shape.cc
@@ -149,13 +149,15 @@ hb_ot_shape_planner_t::compile (hb_ot_shape_plan_t           &plan,
    * Decide who does positioning. GPOS, kerx, kern, or fallback.
    */
 
+  bool has_gsub = hb_ot_layout_has_substitution (face);
+  bool has_gpos = !disable_gpos && hb_ot_layout_has_positioning (face);
   if (0)
     ;
 #ifndef HB_NO_AAT_SHAPE
-  else if (hb_aat_layout_has_positioning (face))
+  else if (hb_aat_layout_has_positioning (face) && !(has_gsub && has_gpos))
     plan.apply_kerx = true;
 #endif
-  else if (!apply_morx && !disable_gpos && hb_ot_layout_has_positioning (face))
+  else if (!apply_morx && has_gpos)
     plan.apply_gpos = true;
 
   if (!plan.apply_kerx && (!has_gpos_kern || !plan.apply_gpos))
diff --git a/test/shaping/data/in-house/tests/macos.tests b/test/shaping/data/in-house/tests/macos.tests
index 38c0ac789..92d806281 100644
--- a/test/shaping/data/in-house/tests/macos.tests
+++ b/test/shaping/data/in-house/tests/macos.tests
@@ -1,3 +1,6 @@
+# https://github.com/harfbuzz/harfbuzz/issues/3008
+/System/Library/Fonts/ヒラギノ丸ゴ\ ProN\ W4.ttc:--features=palt:U+FF11:[gid781=0@-78,0+842]
+
 # https://github.com/harfbuzz/harfbuzz/pull/2871
 /System/Library/Fonts/LucidaGrande.ttc:--font-funcs ot --show-flags:U+0041,U+0042,U+0043,U+0044:[A=0+1413|B=1+1178|C=2+1417|D=3+1534]