City Sample- Props only appear in Movie Render, not in Editor

Some buildings appear only when I render using Movie Render Queue.
In the editor viewport, they are not visible at all.

I already tried:

  • **Selecting everything in the World Outliner and hiding it →and again unhide it.

  • They don’t seem to be in my main level when working in the editor.

  • the problem has nothing to do with render setting. i try it!

It’s as if they exist only during rendering.

How can I find and delete these hidden buildings? Could they be coming from another level, streaming volume, or some render-only setting?

In the YouTUbe Video you can see the problem better: https://youtu.be/C6S1ayXmFFs

Thank you in advanced.

MRQ goes into Play. Do they appear in PIE? If so then there is probably logic that is spawning then on Begin Play.