[Accessibility] Cannot switch to System Menu from MenuStrip by pressing Left/Right arrow in the first or last MenuItem

[Olina-Zhang]

.NET version

8.0.100-alpha.1.22574.1

Did it work in .NET Framework?

No

Did it work in any of the earlier releases of .NET Core or .NET 5+?

No

Issue description

Related to #7770

In MenuStrip, when switching through menu items using keyboard (left and right arrow keys), user cannot switch to System menu. It enumerates only it's own items, in a loop.

For example, menuStrip has 3 MenuItems, Narrator says this: "Item1" -> "Item2" -> "Item3" -> "Item1" -> ...

But in .Net framework, there has a MainMenu control, use keyboard (left and right arrow keys) user could switch to System menu.

Narrator says this: "Item1" -> "Item2" -> "Item3" -> "System menu" -> "Item1" -> ...

Steps to reproduce

Here is the sample for MenuStrip .Net 8.0 application:
MenuStrip.Net8.0.zip
MainMenu.NetFramework.zip

1. Open above MenuStrip.Net8.0 application
2. Build and Run
3. Open Narrator, press Alt key to focus on the first MenuItem: Item1
4. Press right key several times to observe, after Item3, it will focus on which item

[merriemcgaw]

This is a split out issue from an issue submitted by a contributor.

[merriemcgaw]

@Tanya-Solyanik do you think this is something we'd be able to do in .NET 9 or would this be more of a .NET 9 thing?

[Tanya-Solyanik]

I'd move it to NET9 as the fix might be risky

[Tanya-Solyanik]

@Olina-Zhang - Is there a dedicated key stroke to access the system menu?

[MandiMan]

@Tanya-Solyanik There is no dedicated key to access the system menu in the core app, but alt+space opens the system menu drop-down list.

[Tanya-Solyanik]

@merriemcgaw - sounds like the user is not blocked, I suggest closing this issue.

[merriemcgaw]

I would 100% agree there.