diff --git a/CHANGELOG.md b/CHANGELOG.md
index b470bc7f..c061f78d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## [Unreleased]
 
+## [4.3.7]
+
 ## [4.3.6] - 2022-12-01
 
 ## [4.3.5] - 2022-11-28
diff --git a/src/Configurations.ts b/src/Configurations.ts
index dcd8c840..fe8aed2c 100644
--- a/src/Configurations.ts
+++ b/src/Configurations.ts
@@ -13,6 +13,7 @@ import {
   ExecutionWrapperConfig,
 } from './AdvancedExecutableInterface';
 import { platformUtil } from './util/Platform';
+import { cloneRecursively } from './util/ResolveRule';
 
 type SentryValue = 'question' | 'enable' | 'enabled' | 'disable' | 'disable_1' | 'disable_2' | 'disable_3';
 
@@ -112,12 +113,9 @@ export class Configurations {
       };
 
       if (typeof templateFromConfig === 'object' && templateFromConfig !== null) {
-        Object.assign(template, templateFromConfig);
-        // assign does not unwrap Proxy so we have to do it
-        //https://github.com/matepek/vscode-catch2-test-adapter/issues/369
-        template[setEnvKey] = Object.assign({}, templateFromConfig[setEnvKey]);
+        // we need this trick to get rid of the proxy, because asigns works on proxy but not on it's children
+        Object.assign(template, cloneRecursively(templateFromConfig));
         this._log.debug('template', template);
-
         return { template, source: 'userDefined', launchSourceFileMap: {} };
       } else if (templateFromConfig === null) {
         const wpLaunchConfigs = vscode.workspace
@@ -242,7 +240,6 @@ export class Configurations {
 
         return { template, source: 'webfreak.debug', launchSourceFileMap: {} };
       } else if (this._hasExtension('ms-vscode.cpptools')) {
-        // documentation says debug"environment" = [{...}] but that doesn't work
         Object.assign(template, {
           type: 'cppvsdbg',
           linux: { type: 'cppdbg', MIMode: 'gdb' },
diff --git a/src/util/ResolveRule.ts b/src/util/ResolveRule.ts
index eb082718..560d7b65 100644
--- a/src/util/ResolveRule.ts
+++ b/src/util/ResolveRule.ts
@@ -100,13 +100,13 @@ async function replaceAllRegExp(
   const newStr: string[] = [];
 
   while (m && m.index !== undefined) {
-    newStr.push(remainingStr.substr(0, m.index));
+    newStr.push(remainingStr.substring(0, m.index));
 
     const ruleV = await rule(m);
     if (typeof ruleV !== 'string') throw Error('resolveVariables regex func return type should be string');
     newStr.push(ruleV);
 
-    remainingStr = remainingStr.substr(m.index + m[0].length);
+    remainingStr = remainingStr.substring(m.index + m[0].length);
     m = remainingStr.match(resolve);
   }
 
@@ -313,3 +313,7 @@ export function createPythonIndexerForPathVariable(varName: string, pathStr: str
     },
   };
 }
+
+export function cloneRecursively<T>(value: T): T {
+  return _mapAllStrings(value, undefined, x => x) as T;
+}