diff --git a/packages/forms/src/model.ts b/packages/forms/src/model.ts
index 70c42481eae64..ddbcfd76fc946 100644
--- a/packages/forms/src/model.ts
+++ b/packages/forms/src/model.ts
@@ -52,17 +52,21 @@ function _find(control: AbstractControl, path: Array<string|number>| string, del
   }
   if (Array.isArray(path) && path.length === 0) return null;
 
-  return path.reduce((v: AbstractControl | null, name) => {
-    if (v instanceof FormGroup) {
-      return v.controls.hasOwnProperty(name as string) ? v.controls[name] : null;
-    }
-
-    if (v instanceof FormArray) {
-      return v.at(<number>name) || null;
+  // Not using Array.reduce here due to a Chrome 80 bug
+  // https://bugs.chromium.org/p/chromium/issues/detail?id=1049982
+  let controlToFind: AbstractControl|null = control;
+  path.forEach((name: string | number) => {
+    if (controlToFind instanceof FormGroup) {
+      controlToFind = controlToFind.controls.hasOwnProperty(name as string) ?
+          controlToFind.controls[name] :
+          null;
+    } else if (controlToFind instanceof FormArray) {
+      controlToFind = controlToFind.at(<number>name) || null;
+    } else {
+      controlToFind = null;
     }
-
-    return null;
-  }, control);
+  });
+  return controlToFind;
 }
 
 function coerceToValidator(
diff --git a/packages/forms/src/validators.ts b/packages/forms/src/validators.ts
index 116d306e86e14..0b7a171bf3d84 100644
--- a/packages/forms/src/validators.ts
+++ b/packages/forms/src/validators.ts
@@ -465,9 +465,13 @@ function _executeAsyncValidators(control: AbstractControl, validators: AsyncVali
 }
 
 function _mergeErrors(arrayOfErrors: ValidationErrors[]): ValidationErrors|null {
-  const res: {[key: string]: any} =
-      arrayOfErrors.reduce((res: ValidationErrors | null, errors: ValidationErrors | null) => {
-        return errors != null ? {...res !, ...errors} : res !;
-      }, {});
+  let res: {[key: string]: any} = {};
+
+  // Not using Array.reduce here due to a Chrome 80 bug
+  // https://bugs.chromium.org/p/chromium/issues/detail?id=1049982
+  arrayOfErrors.forEach((errors: ValidationErrors | null) => {
+    res = errors != null ? {...res !, ...errors} : res !;
+  });
+
   return Object.keys(res).length === 0 ? null : res;
 }