Sublevels disappear and reappear on restart of editor?

Summary

I asked AI about it, 3 different ones, and they all said this is not documented anywhere, so I thought I’d ask.

My levels all have a persistent level and about 4 sublevels that are loaded and kinda become visible and invisible when needed.

When I open the editor sometimes the sublevels just aren’t there. It just didn’t load them, they don’t appear in the levels list.

Then I close the editor and relaunch it, and everything returns .

Anyone knows why this is happening and how to make it stop?

Thanks!

What Type of Bug are you experiencing?

Editor

Steps to Reproduce

Have a level built in which there’s a persistent level and a few sublevels.

Close editor.

Launch your project.

Expected Result

Persistent level and sublevels all load and are available.

Observed Result

Sometimes, at random, they will not be loaded or present.

Affects Versions

5.7
5.6
5.5

Platform(s)

Windows