diff --git a/src/vs/workbench/services/extensions/node/extensionHostProcessSetup.ts b/src/vs/workbench/services/extensions/node/extensionHostProcessSetup.ts
index 9955c68275811..0f35c544319fb 100644
--- a/src/vs/workbench/services/extensions/node/extensionHostProcessSetup.ts
+++ b/src/vs/workbench/services/extensions/node/extensionHostProcessSetup.ts
@@ -27,6 +27,17 @@ interface ParsedExtHostArgs {
 	uriTransformerPath?: string;
 }
 
+// workaround for https://github.com/microsoft/vscode/issues/85490
+// remove --inspect-port=0 after start so that it doesn't trigger LSP debugging
+(function removeInspectPort() {
+	for (let i = 0; i < process.execArgv.length; i++) {
+		if (process.execArgv[i] === '--inspect-port=0') {
+			process.execArgv.splice(i, 1);
+			i--;
+		}
+	}
+})();
+
 const args = minimist(process.argv.slice(2), {
 	string: [
 		'uriTransformerPath'