Android client fails to log in with Google SSO "disallowed_useragent"

I’m using Android client 2.3 (the latest version). When I’m trying to log in with Oauth SSO provided by Google, it says “403 error: disallowed_useragent”.

Probably it’s related to Google’s security policy change on Webview and embedded browsers (strangely, I cannot paste the relevant URL here).

I wonder if there’s a workaround for this issue.