future dated employee details in ESS

Summary

What is the rule of thumb on future dated mutations and ESS?

Content

I noticed that in the employee selfservice screens, future dated mutations are not visible for the employee. This applies to for instance employment information and salary information. Which is as we want it.

However, on the contracts section in employment info, the future dated contract extension is visible for the employee. This is undesirable for us. Does anybody know how we can hide this future dated contract information for the employee?