Thanks @JammyDodger!
It worked for me when I ignore the signup process and log in directly but when I go through the sign up process and activate the email address, it only invites me to the topic instead of redirects me to the topic.
I remember something like that worked for me before but this time when I tried I don’t know why it didn’t work
And @JammyDodger exactly the same steps. Creating an invite link with the settings (add to group and arrive at topic). 