A crash occurs when executing Build Geometry.

[553504]

Hi, we’re using Unreal 5.6.1 and need some assistance with a Build Geometry bug that we’ve encountered.

The specific steps are as follows:

1. Select File/NewLevel menu to create a basic level (Test)

2. Select File/NewLevel menu again to create an Empty Level(s1)

3. Select File/NewLevel menu again to create another Empty Level(s2)

4. Add the created EmptyLevels to the Basic Level(see image below)

   

5. Insert arbitrary actor to s1 Level

6. Set Visibility of the S1 level to 'False’

   

7. Click Build/Build Geometry(Current Level)

8. When reloading a newly created level (test) without saving, or reloading another level, a Fatal error occurs because the actor in s1 cannot be removed, resulting in a memory leak. See the call stack below:

   

In this situation, there shouldn’t be any problems when reloading a level.