I found bugs in Windows server products all the time, and there was no way of reporting them. If you opened a ticket (by paying, of course), they would never admit it was a bug. Half the time I got the impression I was the only person in the world that every encountered said issue, and that what I was doing was complete edge-case. Which was bullshit, I would investigate and find dozens of references (which never got resolved) because it was pretty much the only way to use X product feature.
Microsoft QA and support is utter trash. You can get better support in Linux on damn near anything by some rando on IRC or the specific product forum, or, gods forbid, Reddit. There is an almost 100% chance you can fix anything on Linux if you look hard enough, even if you have to go dig through the code. Nothing like that happens in the Windows ecosystem.