Extremely random Vindicator spawn?

Might just be my lack of knowledge in terms of the new update, but can somebody answer me why did a Vindicator randomly spawn in the middle of a plains biome with no villages/pillager outposts around for like a thousand blocks?

Thought it’s irrelevant but it might have something to do with the Wandering Trader I killed last night for his leads or not.

I’m playing on Minecraft 1.14 if that helps, heard there are some bugs and that we should wait for 1.14.1, any news on that?