It's only on PCs that it doesn't work properly, because PC makers suck and never bothered to be honest about implementing Thunderbolt 3 properly. They didn't even tell the truth about it. That's why we have this utter silliness called "Thunderbolt 4". All Thunderbolt 4 is, is Thunderbolt 3, but actually implemented properly, with no wiggle room for chintzy PC makers to weasel out.