NAV 2016: How to crash a servicetier with a simple flowfield

It's the first time I encounter this issue and I'm happy to share it with you.

What happen if you run a page with a flowfield who point on another table referring itself?

Take a look on the below example:

if you try to replicate it creating the field 50001 on Customer table you will see your servicetier falling down.

4 hours spent trying to understand why a page can cause a similar damage on servicetier...