sopc problem

I mean, i find sopc builder is very often making problem. If I generate a system, it's very often the design doens't work just by changing a small thing(like deleting something i doesn't need anymore).

And when i generate a system, for example I add a sram, i often don't have the change on quartus, even if i do "update block".

Is it normal?

I am asking if i am the only to have this problem?

Thank you for answering the french muffec.