Problem since change to "Single Sign On"

Problem since change to "Single Sign On"

Dear Zoho Projects team,

Since the change made for the "Single Sign On" feature, people invited to my project's url do the complete registration process but when they go to the project url they have no access granted.

I have made tests and discovered that after invitation has been sent, these people do not appear on the "users" list (even after complete registration is made) and I have to invite each person again. Only after this is done, the person appears on the user list and have finally access to the project's url.

Can this be fixed somehow in order for people to receive access and appear on the user list without need of inviting each of them twice?

Best regards, Sergio
sergiomantilla@hotmail.co