To Microsoft, please understand the real problem here. There is a lot of frustration in this thread, and I've not read through them all, just noticing that as of TODAY, I still experience the same problem as the OP.
Now, again:
I've been marking spam emails as "junk". Both those that land directly in Junk folder (to confirm) and those landing in Inbox. And marking non-junk as not junk.
Still, junk is coming to my inbox and my manually whitelisted emails STILL land in my Junk.
I've been doing this for years, in order to try to avoid having to change my email address.
WHY is there an option to marka s Not Spam, when this button has no effect? Don't try to circumvent this design flaw by referring to algos, a user button should have some master info action fed out.
Why does Microsoft provide these marking options, when they are obviously not working? God knows how many hours I've spent on this througout the years, hoping for betterment.