Camshalf oil leak

Hi
New to the forum.
I have a 2014 tdv6 discovery.
A week ago had a major oil leak stripped down and found the front camshaft seal had popped out on the passenger side. Replaced with a new seal and 50 kms later leak started again and same issue seal was half out.
What is causing this ? Has anyone else seen or heard of this?
Thanks

Welcome to LZ

Genuine seal?

Hi
Yes genuine seal I have actually put 2 it has happened 3 times just didn’t want to make the post too long winded