I clarify because, at least in the US (Canadian laws may differ), afaik building inspection is buyer beware.

If an inspector checked something and if they noted the flaw then it would have been addressed. Or they could have just not checked, not noted, or missed it.

Same with home inspectors, who are under no legal liability except for the most gratuitous and obvious flaws.

Which is contrary to how most people assume the system works when they're buying a new-build house.