diff --git a/frontend/test/frontend_tests/composable_tests/completion_contract_test.cljs b/frontend/test/frontend_tests/composable_tests/completion_contract_test.cljs
index 848015d982..2ffaf2de4a 100644
--- a/frontend/test/frontend_tests/composable_tests/completion_contract_test.cljs
+++ b/frontend/test/frontend_tests/composable_tests/completion_contract_test.cljs
@@ -11,6 +11,7 @@
   down on purpose, so a step that resolved early would see a half-synced
   file."
   (:require
+   [app.common.math :as mth]
    [app.common.test-helpers.composable.comp.nodes :as n]
    [app.common.test-helpers.composable.comp.setups :as setup]
    [app.common.test-helpers.composable.comp.undo-check :as uc]
@@ -30,6 +31,14 @@
 
 (t/use-fixtures :each ftm/fixture)
 
+(t/deftest ^:async rotation-nodes-compose-successive-turns
+  (let [initial (ftm/start-generated (setup/simple-component-with-labeled-copy))
+        first-turn (await (ftm/run-generated-step initial (n/rotate :copy-root 45)))
+        second-turn (await (ftm/run-generated-step first-turn (n/rotate :copy-root 90)))
+        shape (ths/get-shape (ftm/current-file) :copy-root)]
+    (t/is (mth/close? 135 (:rotation shape) 0.01))
+    (t/is (empty? (uc/failures second-turn)))))
+
 (def ^:private original "#abcdef")
 (def ^:private red "#ff0000")
 
diff --git a/frontend/test/frontend_tests/composable_tests/interpreter.cljs b/frontend/test/frontend_tests/composable_tests/interpreter.cljs
index 8ad626cb93..62757b048c 100644
--- a/frontend/test/frontend_tests/composable_tests/interpreter.cljs
+++ b/frontend/test/frontend_tests/composable_tests/interpreter.cljs
@@ -169,9 +169,9 @@
                                           :original-content (:content shape))])
 
     (instance? n/Rotate op)
-    ;; the sidebar rotation, which decides what it touches in copies (check-delta)
+    ;; A node turns by its angle, including after an earlier rotation.
     (let [{:keys [target angle]} op]
-      [(dwt/increase-rotation [(tm/target-shape-id situation target)] angle)])
+      [(dwt/increase-rotation [(tm/target-shape-id situation target)] angle {:delta? true})])
 
     (instance? n/MoveShape op)
     ;; the sidebar position, in page coordinates