[Issue] Assignment invitation url randomly redirects

The assignment invitation url (syle: https://classroom.github.com/*/***********) redirects some students to their previous assignment. As a result they can’t accept the current assignment. When they use the longer url, to which students that don’t experience this issue are redirected to (style: https://classroom.github.com/assignment-invitations/********************************), instead, the issue seems to be solved.

© 2017 GitHub, Inc.
with by
GitHub Education