Looks like there was a small regression in https://github.com/ionic-team/ionic-cli/commit/3bcb3300d3a1a9bc6e9d1a7d447c0dc245960d22, since the SSO params are already URL encoded by `querystring.stringify`: https://github.com/ionic-team/ionic-cli/blob/3bcb3300d3a1a9bc6e9d1a7d447c0dc245960d22/packages/ionic/src/lib/sso.ts#L60 they are getting doubly encoded which is breaking SSO login.
Looks like there was a small regression in 3bcb330, since the SSO params are already URL encoded by
querystring.stringify:ionic-cli/packages/ionic/src/lib/sso.ts
Line 60 in 3bcb330