Layout div classes do nothing, present in current stackblitz demo too

[vinzenzzinecker98]

I thought it was my project setup, I double checked everything and nothing worked. Now I find that the same issue is present in the official Stackblitz demo:

• Layouts from div classes, that should be inherited from css are doing nothgin
• for example
  etc. etc.

Take for example the dataview component:
https://primeng.org/dataview (click on the flash to open stackblitz demo)

How it should look:

How it looks:

Do you have any ideas what I can do to fix that? Given that it is present in the official Demo, it could be a version issue?

Thanks in advance!