diff --git a/frontend/src/app/main/ui/shapes/filters.cljs b/frontend/src/app/main/ui/shapes/filters.cljs
index a4468d649d..bf82f08be0 100644
--- a/frontend/src/app/main/ui/shapes/filters.cljs
+++ b/frontend/src/app/main/ui/shapes/filters.cljs
@@ -116,9 +116,9 @@
              :result filter-id}])
 
 (mf/defc filter-entry* [{:keys [entry]}]
-  (let [props #js {:filter-id (:id entry)
-                   :filter-in (:filter-in entry)
-                   :params (:params entry)}]
+  (let [props (mf/props {:filter-id (:id entry)
+                         :filter-in (:filter-in entry)
+                         :params (:params entry)})]
     (case (:type entry)
       :drop-shadow [:> drop-shadow-filter* props]
       :inner-shadow [:> inner-shadow-filter* props]
diff --git a/frontend/test/frontend_tests/runner.cljs b/frontend/test/frontend_tests/runner.cljs
index a17d9b3149..daaae968a0 100644
--- a/frontend/test/frontend_tests/runner.cljs
+++ b/frontend/test/frontend_tests/runner.cljs
@@ -124,6 +124,7 @@
    [frontend-tests.ui.routes-test]
    [frontend-tests.ui.settings-password-schema-test]
    [frontend-tests.ui.settings-shortcuts-test]
+   [frontend-tests.ui.shape-filters-test]
    [frontend-tests.ui.shortcuts-labels-test]
    [frontend-tests.ui.sidebar-scroll-test]
    [frontend-tests.ui.stroke-menu-test]
@@ -273,6 +274,7 @@
    'frontend-tests.text-editor-paste-guard-test
    'frontend-tests.ui.settings-password-schema-test
    'frontend-tests.ui.settings-shortcuts-test
+   'frontend-tests.ui.shape-filters-test
    'frontend-tests.ui.shortcuts-labels-test
    'frontend-tests.ui.sidebar-scroll-test
    'frontend-tests.ui.stroke-menu-test
diff --git a/frontend/test/frontend_tests/ui/shape_filters_test.cljs b/frontend/test/frontend_tests/ui/shape_filters_test.cljs
new file mode 100644
index 0000000000..0cfc20b149
--- /dev/null
+++ b/frontend/test/frontend_tests/ui/shape_filters_test.cljs
@@ -0,0 +1,47 @@
+;; This Source Code Form is subject to the terms of the Mozilla Public
+;; License, v. 2.0. If a copy of the MPL was not distributed with this
+;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
+;;
+;; Copyright (c) KALEIDOS SUBSIDIARY SL
+
+(ns frontend-tests.ui.shape-filters-test
+  (:require
+   ["react-dom/server" :as rds]
+   [app.common.types.shape :as cts]
+   [app.common.uuid :as uuid]
+   [app.main.ui.shapes.filters :as filters]
+   [cljs.test :as t :include-macros true]
+   [cuerdas.core :as str]
+   [rumext.v2 :as mf]))
+
+(defn- render-filter
+  [shadow-style]
+  (let [shape (-> (cts/setup-shape {:type :rect :x 0 :y 0 :width 100 :height 100})
+                  (assoc :fills [{:fill-color "#4488ff" :fill-opacity 1}]
+                         :shadow [{:id (uuid/next)
+                                   :style shadow-style
+                                   :offset-x 4 :offset-y 4 :blur 4 :spread 0
+                                   :hidden false
+                                   :color {:color "#000000" :opacity 0.5}}]))]
+    (rds/renderToStaticMarkup
+     (mf/element filters/filters* #js {:filterId "filter" :shape shape}))))
+
+(defn- tags
+  [markup tag]
+  (re-seq (re-pattern (str "<" tag "[^>]*>")) markup))
+
+;; Each filter primitive must name its result and read the previous one, or
+;; the chain breaks: an inner shadow then covers the shape fill with the
+;; shadow color (#11967).
+
+(t/deftest inner-shadow-filter-chain-is-wired
+  (let [markup (render-filter :inner-shadow)
+        blends (tags markup "feBlend")]
+    (t/is (str/includes? (first (tags markup "feFlood")) "result="))
+    (t/is (= 2 (count blends)))
+    (t/is (every? #(str/includes? % "in2=") blends))
+    (t/is (every? #(str/includes? % "result=") blends))))
+
+(t/deftest drop-shadow-filter-chain-is-wired
+  (let [blends (tags (render-filter :drop-shadow) "feBlend")]
+    (t/is (every? #(and (str/includes? % "in2=") (str/includes? % "result=")) blends))))