Hello [mention removed]
Thank you for the time you dedicated to pinpointing this insidious bug!
During my tests, I noticed that while both Light Mixer and View Changes were open, pasting a folder into the Outliner would generate a crash on a newly created scene, as well as a scene that was not the one the engine opens by default - the Project Default scene did not crash upon pasting a folder, and this might be used as a workaround: set your working scene as the one the engine opens by default.
I’ve made another JIRA report to be added to the Unreal issue tracker website (https://issues.unrealengine.com).
Please note that Epic ultimately determines whether the issue will be made publicly accessible, and the process can take a few days; therefore, the tracking link may not be immediately accessible.
Once available, you will be able to track the resolution at Unreal Engine Issues and Bug Tracker (UE\-296010)
As I believe we have addressed the issues you reported, I’ll close the case.
However, please feel free to reply if you have anything else to add.
All the best,
[mention removed]