diff --git a/tests/baselines/reference/asyncFunctionReturnType.js b/tests/baselines/reference/asyncFunctionReturnType.js
index 99d6b13c349ad..4acff2a6b0659 100644
--- a/tests/baselines/reference/asyncFunctionReturnType.js
+++ b/tests/baselines/reference/asyncFunctionReturnType.js
@@ -74,6 +74,13 @@ async function fGenericIndexedTypeForPromiseOfKProp<TObj extends Obj, K extends
 async function fGenericIndexedTypeForExplicitPromiseOfKProp<TObj extends Obj, K extends keyof TObj>(obj: TObj, key: K): Promise<TObj[K]> {
     return Promise.resolve<TObj[K]>(obj[key]);
 }
+
+// #27711
+
+async function fGeneric<T>(x: T) {
+    return x;
+}
+const expected: Promise<number> = fGeneric(undefined as Promise<number>);
 
 
 //// [asyncFunctionReturnType.js]
@@ -173,3 +180,10 @@ function fGenericIndexedTypeForExplicitPromiseOfKProp(obj, key) {
         return Promise.resolve(obj[key]);
     });
 }
+// #27711
+function fGeneric(x) {
+    return __awaiter(this, void 0, void 0, function* () {
+        return x;
+    });
+}
+const expected = fGeneric(undefined);
diff --git a/tests/baselines/reference/asyncFunctionReturnType.symbols b/tests/baselines/reference/asyncFunctionReturnType.symbols
index cc930183d2210..bed87add640b2 100644
--- a/tests/baselines/reference/asyncFunctionReturnType.symbols
+++ b/tests/baselines/reference/asyncFunctionReturnType.symbols
@@ -287,3 +287,21 @@ async function fGenericIndexedTypeForExplicitPromiseOfKProp<TObj extends Obj, K
 >key : Symbol(key, Decl(asyncFunctionReturnType.ts, 72, 110))
 }
 
+// #27711
+
+async function fGeneric<T>(x: T) {
+>fGeneric : Symbol(fGeneric, Decl(asyncFunctionReturnType.ts, 74, 1))
+>T : Symbol(T, Decl(asyncFunctionReturnType.ts, 78, 24))
+>x : Symbol(x, Decl(asyncFunctionReturnType.ts, 78, 27))
+>T : Symbol(T, Decl(asyncFunctionReturnType.ts, 78, 24))
+
+    return x;
+>x : Symbol(x, Decl(asyncFunctionReturnType.ts, 78, 27))
+}
+const expected: Promise<number> = fGeneric(undefined as Promise<number>);
+>expected : Symbol(expected, Decl(asyncFunctionReturnType.ts, 81, 5))
+>Promise : Symbol(Promise, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --))
+>fGeneric : Symbol(fGeneric, Decl(asyncFunctionReturnType.ts, 74, 1))
+>undefined : Symbol(undefined)
+>Promise : Symbol(Promise, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --))
+
diff --git a/tests/baselines/reference/asyncFunctionReturnType.types b/tests/baselines/reference/asyncFunctionReturnType.types
index dd45a4bf6345a..1d8db63ce282a 100644
--- a/tests/baselines/reference/asyncFunctionReturnType.types
+++ b/tests/baselines/reference/asyncFunctionReturnType.types
@@ -221,3 +221,19 @@ async function fGenericIndexedTypeForExplicitPromiseOfKProp<TObj extends Obj, K
 >key : K
 }
 
+// #27711
+
+async function fGeneric<T>(x: T) {
+>fGeneric : <T>(x: T) => Promise<Awaited<T>>
+>x : T
+
+    return x;
+>x : T
+}
+const expected: Promise<number> = fGeneric(undefined as Promise<number>);
+>expected : Promise<number>
+>fGeneric(undefined as Promise<number>) : Promise<number>
+>fGeneric : <T>(x: T) => Promise<Awaited<T>>
+>undefined as Promise<number> : Promise<number>
+>undefined : undefined
+
diff --git a/tests/baselines/reference/promiseType.js b/tests/baselines/reference/promiseType.js
index 84d9d713b4810..6285d0415f358 100644
--- a/tests/baselines/reference/promiseType.js
+++ b/tests/baselines/reference/promiseType.js
@@ -217,6 +217,8 @@ const pc6 = p.then(() => Promise.reject("1"), () => {});
 const pc7 = p.then(() => Promise.reject("1"), () => {throw 1});
 const pc8 = p.then(() => Promise.reject("1"), () => Promise.resolve(1));
 const pc9 = p.then(() => Promise.reject("1"), () => Promise.reject(1));
+
+const expected: undefined = undefined as Awaited<undefined>;
 
 
 //// [promiseType.js]
@@ -440,3 +442,4 @@ const pc6 = p.then(() => Promise.reject("1"), () => { });
 const pc7 = p.then(() => Promise.reject("1"), () => { throw 1; });
 const pc8 = p.then(() => Promise.reject("1"), () => Promise.resolve(1));
 const pc9 = p.then(() => Promise.reject("1"), () => Promise.reject(1));
+const expected = undefined;
diff --git a/tests/baselines/reference/promiseType.symbols b/tests/baselines/reference/promiseType.symbols
index cec81cd7d8266..60589b5f4464b 100644
--- a/tests/baselines/reference/promiseType.symbols
+++ b/tests/baselines/reference/promiseType.symbols
@@ -1089,3 +1089,8 @@ const pc9 = p.then(() => Promise.reject("1"), () => Promise.reject(1));
 >Promise : Symbol(Promise, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --))
 >reject : Symbol(PromiseConstructor.reject, Decl(lib.es2015.promise.d.ts, --, --))
 
+const expected: undefined = undefined as Awaited<undefined>;
+>expected : Symbol(expected, Decl(promiseType.ts, 219, 5))
+>undefined : Symbol(undefined)
+>Awaited : Symbol(Awaited, Decl(lib.es5.d.ts, --, --))
+
diff --git a/tests/baselines/reference/promiseType.types b/tests/baselines/reference/promiseType.types
index dd20fb656ea5a..18e943c0ad032 100644
--- a/tests/baselines/reference/promiseType.types
+++ b/tests/baselines/reference/promiseType.types
@@ -1583,3 +1583,8 @@ const pc9 = p.then(() => Promise.reject("1"), () => Promise.reject(1));
 >reject : <T = never>(reason?: any) => Promise<T>
 >1 : 1
 
+const expected: undefined = undefined as Awaited<undefined>;
+>expected : undefined
+>undefined as Awaited<undefined> : undefined
+>undefined : undefined
+
diff --git a/tests/cases/compiler/asyncFunctionReturnType.ts b/tests/cases/compiler/asyncFunctionReturnType.ts
index b8f8590d5228f..aa8a6bf3a5008 100644
--- a/tests/cases/compiler/asyncFunctionReturnType.ts
+++ b/tests/cases/compiler/asyncFunctionReturnType.ts
@@ -74,3 +74,10 @@ async function fGenericIndexedTypeForPromiseOfKProp<TObj extends Obj, K extends
 async function fGenericIndexedTypeForExplicitPromiseOfKProp<TObj extends Obj, K extends keyof TObj>(obj: TObj, key: K): Promise<TObj[K]> {
     return Promise.resolve<TObj[K]>(obj[key]);
 }
+
+// #27711
+
+async function fGeneric<T>(x: T) {
+    return x;
+}
+const expected: Promise<number> = fGeneric(undefined as Promise<number>);
diff --git a/tests/cases/compiler/promiseType.ts b/tests/cases/compiler/promiseType.ts
index ba4a7f6041396..db3fe4caa5553 100644
--- a/tests/cases/compiler/promiseType.ts
+++ b/tests/cases/compiler/promiseType.ts
@@ -217,3 +217,5 @@ const pc6 = p.then(() => Promise.reject("1"), () => {});
 const pc7 = p.then(() => Promise.reject("1"), () => {throw 1});
 const pc8 = p.then(() => Promise.reject("1"), () => Promise.resolve(1));
 const pc9 = p.then(() => Promise.reject("1"), () => Promise.reject(1));
+
+const expected: undefined = undefined as Awaited<undefined>;