vscode: When 2 extensions contribute the same submenus it is duplicated instead of merged

• VSCode Version: 1.50.1
• OS Version: macos 10.15.7

Steps to Reproduce:

1. Create 2 extensions that contribute the same submenu with different sub menu items. See extension 1

https://github.com/devinea/code_submenus/blob/main/code1/package.json#L22-L45

and extension 2

https://github.com/devinea/code_submenus/blob/main/code2/package.json#L24-L46

1. When both extensions are installed the Tools menu appears 2 times and the content from 2 the extensions is shown in both.

I would like for multiple of my extensions (part of a suite) to contribute to the same Tools menu and the sub menu items from each extension shown within. If I remove the following from the config of 1 of the 2 extensions the desired UX is achieved when both are installed.

      "explorer/context": [
        {
          "label": "Tools",
          "submenu": "tools",
          "group": "1_modification@1"
        }
      ],

But when launching the extension with explorer/context removed without the other installed the menu item does not appear. This is particularly annoying when developing and launching for debugging.

Does this issue occur when all extensions are disabled?: No