Semantic Kernel extension not loading in VSCode Extension 'ms-semantic-kernel.semantic-kernel' CANNOT use API proposal: treeViewActiveItem

[jochenvw]

Describe the bug
VSCode plugin is non-responsive.

• Running VSCode insiders
• Windows11 + WSL2 + Docker
• DevContainer - with config:

	"name": "Python 3",
	// Or use a Dockerfile or Docker Compose file. More info: https://containers.dev/guide/dockerfile
	"image": "mcr.microsoft.com/vscode/devcontainers/python:3",
	"features": {
		"ghcr.io/devcontainers/features/python:1": {}
	},
	"customizations": {
		"vscode": {
			"extensions": [
				"mechatroner.rainbow-csv",
				"ms-vscode.vscode-node-azure-pack",
				"ms-toolsai.vscode-ai",
				"ms-vscode.azure-repos",
				"ms-vscode.azurecli",
				"ms-python.python",
				"ms-azuretools.vscode-bicep",
				"ms-azuretools.rad-vscode-bicep",
				"ms-semantic-kernel.semantic-kernel",
				"prompt-flow.prompt-flow",
				"KevinRose.vsc-python-indent",
				"njpwerner.autodocstring",
				"ms-python.debugpy"
			]
		}
	}

In order to experiment with Semantic Kernel + Promptflow. Extension just doesn't or barely respond. Only waiting and loading.

Found this in the Extension Host logs:

2024-04-30 13:41:44.887 [error] Error: Extension 'ms-semantic-kernel.semantic-kernel' CANNOT use API proposal: treeViewActiveItem.
Its package.json#enabledApiProposals-property declares: [] but NOT treeViewActiveItem.
 The missing proposal MUST be added and you must start in extension development mode or use the following command line switch: --enable-proposed-api ms-semantic-kernel.semantic-kernel
    at y (/vscode/vscode-server-insiders/bin/linux-x64/dfa434a13c74b847c9edc4a82e5ca0588f24ce9d-insider/out/vs/workbench/api/node/extensionHostProcess.js:143:51558)
    at Object.get activeItem [as activeItem] (/vscode/vscode-server-insiders/bin/linux-x64/dfa434a13c74b847c9edc4a82e5ca0588f24ce9d-insider/out/vs/workbench/api/node/extensionHostProcess.js:157:36010)
    at JSON.stringify (<anonymous>)
    at n (/vscode/vscode-server-insiders/bin/linux-x64/dfa434a13c74b847c9edc4a82e5ca0588f24ce9d-insider/out/vs/workbench/api/node/extensionHostProcess.js:152:1395)
    at Function.serializeRequestArguments (/vscode/vscode-server-insiders/bin/linux-x64/dfa434a13c74b847c9edc4a82e5ca0588f24ce9d-insider/out/vs/workbench/api/node/extensionHostProcess.js:152:9530)
    at c.U (/vscode/vscode-server-insiders/bin/linux-x64/dfa434a13c74b847c9edc4a82e5ca0588f24ce9d-insider/out/vs/workbench/api/node/extensionHostProcess.js:152:5716)
    at Proxy.F.<computed>.z.charCodeAt.F.<computed> (/vscode/vscode-server-insiders/bin/linux-x64/dfa434a13c74b847c9edc4a82e5ca0588f24ce9d-insider/out/vs/workbench/api/node/extensionHostProcess.js:152:2993)
    at R.setValue (/vscode/vscode-server-insiders/bin/linux-x64/dfa434a13c74b847c9edc4a82e5ca0588f24ce9d-insider/out/vs/workbench/api/node/extensionHostProcess.js:147:8994)
    at /vscode/vscode-server-insiders/bin/linux-x64/dfa434a13c74b847c9edc4a82e5ca0588f24ce9d-insider/out/vs/workbench/api/node/extensionHostProcess.js:140:27837
    at M.a (/vscode/vscode-server-insiders/bin/linux-x64/dfa434a13c74b847c9edc4a82e5ca0588f24ce9d-insider/out/vs/workbench/api/node/extensionHostProcess.js:140:27955)
    at M.h (/vscode/vscode-server-insiders/bin/linux-x64/dfa434a13c74b847c9edc4a82e5ca0588f24ce9d-insider/out/vs/workbench/api/node/extensionHostProcess.js:99:20101)
    at M.g (/vscode/vscode-server-insiders/bin/linux-x64/dfa434a13c74b847c9edc4a82e5ca0588f24ce9d-insider/out/vs/workbench/api/node/extensionHostProcess.js:99:20085)
    at listOnTimeout (node:internal/timers:569:17)
    at processTimers (node:internal/timers:512:7)

To Reproduce
Steps to reproduce the behavior:
(in my case) install plugin - click on plugin tb

Platform

• OS: Win11
• IDE: Code Insiders
• Language: Python

Additional context
I see PromptFlow extension is also not loading ...