diff --git a/lib/jsdom/living/helpers/ce-reactions.js b/lib/jsdom/living/helpers/ce-reactions.js
index 58809edd88..692524aa18 100644
--- a/lib/jsdom/living/helpers/ce-reactions.js
+++ b/lib/jsdom/living/helpers/ce-reactions.js
@@ -1,6 +1,7 @@
 "use strict";
 
 const { CUSTOM_ELEMENT_REACTIONS_STACK, invokeCEReactions } = require("./custom-elements");
+const idlUtils = require("../generated/utils");
 
 /**
  * Mapping of all the property interfaces that are marked with the [CEReaction] attributes.
@@ -349,7 +350,9 @@ const CE_REACTIONS_INTERFACES = {
     "bgColor"
   ],
   HTMLTimeElement: ["dateTime"],
-  DOMStringMap: ["void"],
+  DOMStringMap: [
+    "void"
+  ],
   HTMLElement: [
     "title",
     "lang",
@@ -672,5 +675,6 @@ function patchInterfaces(interfaces) {
 }
 
 module.exports = {
-  patchInterfaces
+  patchInterfaces,
+  wrapWithCEReactions
 };
diff --git a/lib/jsdom/living/nodes/DOMStringMap-impl.js b/lib/jsdom/living/nodes/DOMStringMap-impl.js
index 4941c3e8fb..7471d4b534 100644
--- a/lib/jsdom/living/nodes/DOMStringMap-impl.js
+++ b/lib/jsdom/living/nodes/DOMStringMap-impl.js
@@ -4,6 +4,7 @@ const idlUtils = require("../generated/utils.js");
 const { setAttributeValue, removeAttributeByName } = require("../attributes");
 const validateName = require("../helpers/validate-names").name;
 const DOMException = require("domexception");
+const { wrapWithCEReactions } = require("../helpers/ce-reactions");
 
 const dataAttrRe = /^data-([^A-Z]*)$/;
 
@@ -15,7 +16,7 @@ function attrSnakeCase(name) {
   return name.replace(/[A-Z]/g, match => `-${match.toLowerCase()}`);
 }
 
-exports.implementation = class DOMStringMapImpl {
+class DOMStringMapImpl {
   constructor(args, privateData) {
     this._element = privateData.element;
   }
@@ -57,4 +58,12 @@ exports.implementation = class DOMStringMapImpl {
     name = `data-${attrSnakeCase(name)}`;
     removeAttributeByName(this._element, name);
   }
-};
+}
+
+// This is poor work-around to make [CEReactions] work with interfaces using proxies.
+// Instead of patching the interfaces, in those cases we patch directly the class impl
+DOMStringMapImpl.prototype[idlUtils.namedSetNew] = wrapWithCEReactions(DOMStringMapImpl.prototype[idlUtils.namedSetNew]);
+DOMStringMapImpl.prototype[idlUtils.namedSetExisting] = wrapWithCEReactions(DOMStringMapImpl.prototype[idlUtils.namedSetExisting]);
+DOMStringMapImpl.prototype[idlUtils.namedDelete] = wrapWithCEReactions(DOMStringMapImpl.prototype[idlUtils.namedDelete]);
+
+exports.implementation = DOMStringMapImpl;
diff --git a/test/web-platform-tests/to-run.yaml b/test/web-platform-tests/to-run.yaml
index 2b8c32f881..7ab3c5a434 100644
--- a/test/web-platform-tests/to-run.yaml
+++ b/test/web-platform-tests/to-run.yaml
@@ -104,21 +104,20 @@ microtasks-and-constructors.html: [fail, Usage of external scripts doesn't block
 parser/parser-constructs-custom-element-synchronously.html: [fail, Usage of external scripts doesn't block HTML parsing, https://github.com/jsdom/jsdom/issues/2413]
 parser/parser-sets-attributes-and-children.html: [fail, Usage of external scripts doesn't block HTML parsing, https://github.com/jsdom/jsdom/issues/2413]
 parser/parser-uses-constructed-element.html: [fail, Usage of external scripts doesn't block HTML parsing, https://github.com/jsdom/jsdom/issues/2413]
-# parser/parser-uses-registry-of-owner-document.html: [fail, TODO]
+parser/parser-uses-registry-of-owner-document.html: [fail, TODO]
 parser/serializing-html-fragments.html: [fail, parse5 doesn't support is attribute for serialization]
-perform-microtask-checkpoint-before-construction.html: [fail, TODO]
+perform-microtask-checkpoint-before-construction.html: [fail, impossible to implement microtask checkpoint without patching Promise]
 pseudo-class-defined.html: [timeout, :defined is not defined and throws]
-range-and-constructors.html: [fail, TODO]
-reactions/CSSStyleDeclaration.html: [fail, TODO]
-reactions/DOMStringMap.html: [fail, TODO]
+range-and-constructors.html: [fail, Range is not implemented]
+reactions/CSSStyleDeclaration.html: [fail, CSSStyleDeclaration is not implemented using wedidl2js]
 reactions/Document.html: [fail, TODO]
-reactions/ElementContentEditable.html: [fail, TODO]
-reactions/HTMLButtonElement.html: [fail, TODO]
+reactions/ElementContentEditable.html: [fail, contentEditable is not implemented]
+# reactions/HTMLButtonElement.html: [fail, TODO]
 reactions/HTMLElement.html: [fail, TODO]
 reactions/HTMLOptionsCollection.html: [fail, TODO]
 reactions/HTMLSelectElement.html: [fail, TODO]
-reactions/Range.html: [fail, TODO]
-reactions/Selection.html: [fail, TODO]
+reactions/Range.html: [fail, Range is not implemented]
+reactions/Selection.html: [fail, Selection is not implemented]
 throw-on-dynamic-markup-insertion-counter-construct.html: [timeout, TODO]
 throw-on-dynamic-markup-insertion-counter-reactions.html: [timeout, TODO]
 upgrading/Document-importNode.html: [fail, TODO]