Reproduction steps:
1. Open the “EmojiLeakStripped“ project
2. Open the test window (control/ctrl + R) and close it
3. Click inside any window (e.g. Console) and observe the Console
4. Repeat steps 2-3 up to 5 times

Expected result: No “ALLOC_TEMP_TLS” error
Actual result: “TLS Allocator ALLOC_TEMP_TLS, underlying allocator ALLOC_TEMP_MAIN has unfreed allocations, size 28” error

Reproduced in: 2022.1.0a10, 2022.2.0a19, 2022.3.4f1
Not reproduced in: 2021.3.28f1, 2022.1.0a9, 2023.1.0a1, 2023.1.3f1, 2023.2.0a23

Reproduced using: macOS 13.4.1 (Intel)

Notes:
1. Not reproduced when opening the test window via the main menu (Assets > Test > [Bug] Bug Window)
2. Not reproduced when removing the emoji from the test window’s MenuItem path

Full error:
TLS Allocator ALLOC_TEMP_TLS, underlying allocator ALLOC_TEMP_MAIN has unfreed allocations, size 28
UnityEditor.EditorWindow:ShowModal ()
MyWindow:ShowExample () (at Assets/Editor/MyWindow.cs:12)
UnityEditor.EditorApplication:Internal_CallGlobalEventHandler ()