2.7.0 update bugs

[julien]

Hello,

When I upgraded to 2.7, all the previous project link and next project link didn't work.
and ".type-project" code is invalid.
Because I am reverting to the previous version, I am unable to provide a link to the bug website.
Cheers,
Sheng

[mariusjopen]

Dear @julien
on my test-version it works.
A link would be very helpful. Otherwise it is very difficult for us to help you.

Best!

Marius