Not only that, I had a PhpBB hosting service back in the day and every update they changed something which nearly broke my service...
There are some really strange things in the PhpBB codebase - I remember that the software somehow found out that I injected custom code and therefore stopped working.
(My biggest problem was the upgrade from 3.0.12 to a newer version (probably 3.1) back in 2014 / 2015)
