[Problem/Bug]: ICoreWebView2Controller invalid read on Close() C++

[brandon-chan0400]

What happened?

I have implemented an embedded browser that inherits from CWnd, using the C++ SDK, and am getting an invalid read error upon closing the ICoreWebView2Controller class object.

*** ERROR: Access violation
+++ Invalid read from FFFFFFFFFFFFFFFF
rsp: 89f91fa890, rip: 7ffd40440d62, rbp: 7db800287530
rsi: 7db800269d48, rdi: 7db800269d40
rax: 6f007200620062, rbx: 1, rcx: 27067ab69c8, rdx: 0
r8: 0, r9: 7ffd4064cf70, r10: 1, r11: 1
r12: 7db8002e10f0, r13: 7db800287530, r14: 7db800256940, r15: 7db800256958

Within the CWnd::OnDestroy function override, I am trying to shut down the ICoreWebView2Controller object when I get this error and I believe that I have removed all the event handlers I added. Additionally, I have implemented my own host interop object that interacts with the browser. I believe it should've been deleted correctly.

Below is the stack trace that I am getting before running into this critical error.

I have other embedded browser instances that run JavaScript but close correctly. What could be the cause for this issue?

Importance

Blocking. My app's basic functions are not working due to this issue.

Runtime Channel

Stable release (WebView2 Runtime)

Runtime Version

127.0.2651.105

SDK Version

1.0.2151.40

Framework

Win32

Operating System

Windows 11

OS Version

No response

Repro steps

1. The implemented web browser initialises and connects a host interop object between the web code and WebView2 objects.
2. Some JS runs and the host interop object completes its calls.
3. Implemented web browser is attempted to be shut down. Error is produced at this step

Repros in Edge Browser

No, issue does not reproduce in the corresponding Edge version

Regression

Don't know

Last working version (if regression)

No response

[brandon-chan0400]

Found fix on my side