OnContextCreated Delegate Issues 6367 to 7151 on Win arm64

[leeroy]

We're encountering an issue running a x86_64 build of our app (largely based on the CEFClient) on ARM64 Windows 11 (I'm assuming emulated with Prism).

CEF 7151
Windows 11 ARM64

Using a custom OnContextCreated delegate to add additional values to window.navigator during the JavaScript context creation doesn't always fire, causing those modifications to be absent. The implementation works fine on x64 Windows systems, but when running on Windows ARM64, the application behaves inconsistently. Fortunately the ARM64 specific build doesn't encounter this issue, but emulated or not, I wouldn't expect to see a change in behaviour running the X86_64 build on these machines. Oddly it seems happen most often when the user encounters a change via window.location.href and it is not 100% consistent.

Any suggestions for things to try would be great!