diff --git a/packages/kbn-test/jest_integration_node/jest-preset.js b/packages/kbn-test/jest_integration_node/jest-preset.js
index 8f5f433139ab7..ff50c2de40961 100644
--- a/packages/kbn-test/jest_integration_node/jest-preset.js
+++ b/packages/kbn-test/jest_integration_node/jest-preset.js
@@ -8,10 +8,14 @@
 
 const preset = require('../jest-preset');
 
+const presetClone = { ...preset };
+
+delete presetClone.testEnvironment; // simply redefining as `testEnvironment: 'node'` has some weird side-effects (https://github.com/elastic/kibana/pull/138877)
+
 /** @typedef {import("@jest/types").Config.InitialOptions} JestConfig */
 /** @type {JestConfig} */
 module.exports = {
-  ...preset,
+  ...presetClone,
   testMatch: ['**/integration_tests**/*.test.{js,mjs,ts,tsx}'],
   testPathIgnorePatterns: preset.testPathIgnorePatterns.filter(
     (pattern) => !pattern.includes('integration_tests')
@@ -40,7 +44,6 @@ module.exports = {
     ? [['json', { file: 'jest-integration.json' }]]
     : ['html', 'text'],
 
-  testEnvironment: 'node',
   snapshotSerializers: [],
   setupFiles: ['<rootDir>/node_modules/@kbn/test/target_node/jest/setup/babel_polyfill.js'],
   haste: {
diff --git a/packages/kbn-test/jest_node/jest-preset.js b/packages/kbn-test/jest_node/jest-preset.js
index 78d20414b9389..a28456e0da1f5 100644
--- a/packages/kbn-test/jest_node/jest-preset.js
+++ b/packages/kbn-test/jest_node/jest-preset.js
@@ -8,9 +8,12 @@
 
 const preset = require('../jest-preset');
 
+const presetClone = { ...preset };
+
+delete presetClone.testEnvironment; // simply redefining as `testEnvironment: 'node'` has some weird side-effects (https://github.com/elastic/kibana/pull/138877#issuecomment-1222366247)
+
 module.exports = {
-  ...preset,
-  testEnvironment: 'node',
+  ...presetClone,
   snapshotSerializers: [],
   setupFiles: ['<rootDir>/node_modules/@kbn/test/target_node/jest/setup/babel_polyfill.js'],
   haste: {
diff --git a/yarn.lock b/yarn.lock
index 1c92135bf60bc..558487dc52ea3 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -27577,9 +27577,9 @@ undefsafe@^2.0.5:
   integrity sha512-WxONCrssBM8TSPRqN5EmsjVrsv4A8X12J4ArBiiayv3DyyG3ZlIg6yysuuSYdZsVz3TKcTg2fd//Ujd4CHV1iA==
 
 undici@^5.1.1:
-  version "5.5.1"
-  resolved "https://registry.yarnpkg.com/undici/-/undici-5.5.1.tgz#baaf25844a99eaa0b22e1ef8d205bffe587c8f43"
-  integrity sha512-MEvryPLf18HvlCbLSzCW0U00IMftKGI5udnjrQbC5D4P0Hodwffhv+iGfWuJwg16Y/TK11ZFK8i+BPVW2z/eAw==
+  version "5.8.2"
+  resolved "https://registry.yarnpkg.com/undici/-/undici-5.8.2.tgz#071fc8a6a5d24db0ad510ad442f607d9b09d5eec"
+  integrity sha512-3KLq3pXMS0Y4IELV045fTxqz04Nk9Ms7yfBBHum3yxsTR4XNn+ZCaUbf/mWitgYDAhsplQ0B1G4S5D345lMO3A==
 
 unfetch@^4.2.0:
   version "4.2.0"