Faulty notifications menu for guest invitaions

[weimens]

How to reproduce:

• user: invites guest (clear notifications beforehand: https:///notification/list/)
• guest: accepts invitation
• user: bell icon shows that there is a new notification, but the list is empty and the user gets an email.

Current behaviour:

• Bell icons shows that, there is a new notification, but the notifications list is empty and the user gets an email.

Expected behaviour:

• Either not notification or a notification that the guest invitations was accepted.

Version:

• seafile-pro-server_7.1.8_x86-64_CentOS