Wandering traders can still spawn underground

Hi, my name is HenryEdwardRud, i play Minecraft Bedrock Edition on my Xbox One. Yesterday i was opening Minecraft, and saw this fixes update. It was named 'A new update is now available to fix a variety of gameplay issues.' as you can see in the first attachment. But it mentioned 'The Wandering Trader will no longer spawn in water, lava or underground.' as seen in the second attachment. After that i opened 'My Favorite World' world and i went underground, probably at deepslate level. Then i see this. 3rd attachment. Not clear view i know. But it's still a wandering trader