Newly registered members are not redirected to the Completed Registration page

Hello All,

When a user registers they are not redirected to the Options/Membership Page Options/Registration completed page, which is set.

The registration process stops at
Title: Sign up for Standard
Text box: You currently have a subscription for the Standard subscription. If you wish to sign up a different subscription then you can do [sic] below.

There is nothing to click and from a user perspective it does not seem that the process is complete, even though it is.

The site is running Membership on WP 6.1 and BP 1.8

I have a very simple setup, there is one Subscription Plan, Standard (which is free) and one Access Level, Standard. Coupons are disabled. There are no payment gateways.

Any help would be appreciated.