vscode: Remote-SSH does not work with 1.54 and --extensions-dir option

• VSCode Version: 1.54.1
• Local OS Version:Windows 8
• Remote OS Version:CentOS 8
• Remote Extension/Connection Type: SSH

Steps to Reproduce:

1. install(extract zip) VSCode to C:\VSCode
2. start VSCode with “–extensions-dir Z:\home\.vscode\extensions” option
3. click Remote Explorer
4. show these logs in “Log (Extension Host)” window.

[2021-03-05 13:57:35.164] [exthost] [error] Activating extension ms-vscode-remote.remote-ssh failed due to an error:
[2021-03-05 13:57:35.168] [exthost] [error] Error: [nullExtensionDescription]: Proposed API is only available when running out of dev or with the following command line switch: --enable-proposed-api nullExtensionDescription
	at f (c:\VSCode\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:87:74959)
	at Object.p [as checkProposedApiEnabled] (c:\VSCode\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:87:74906)
	at Object.registerRemoteAuthorityResolver (c:\VSCode\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:95:35427)
	at t.activate (z:\home\.vscode\extensions\ms-vscode-remote.remote-ssh-0.65.0\out\extension.js:127:113555)
	at Function._callActivateOptional (c:\VSCode\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:91:14037)
	at Function._callActivate (c:\VSCode\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:91:13714)
	at c:\VSCode\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:91:11746
	at processTicksAndRejections (internal/process/task_queues.js:97:5)
	at async Promise.all (index 0)

Does this issue occur when you try this locally?: Yes Does this issue occur when you try this locally and all extensions are disabled?: Yes

I uninstalled all extensions and re-install remote-ssh only, same result. I do not use --extensions-dir, works fine. I used 1.53.x and --extensions-dir, works fine.