Keying the Spawned Property of a Spawnable Breaks in the details panel

The spawnable mesh seems to be breaking when their spawned property is altered. If you uncheck the spawned property in Sequencer, the Details panel also breaks similar to keying the property.

This is a Regression from 4.15.3

1. Open a project
2. Create a new Level Sequence
3. Open the Level Sequence
4. Drag a Cube into the Level Sequence to create a spawned mesh
5. Press the Spawned Track Add Key Frame button

Result: The mesh's details panel breaks and the mesh is unselected in the viewport

Expected Result: The details panel doesn't break and the mesh is still selected in the viewport

UE-74991 also affects Valve Index

ue5.1

UE-170920 still exists in 5.1.1?

I am not able to find world outliner how to enable it?

How to have a sound cue follow a PlayerController along a spline?

How can i modify the param name in EQS node

Bonjour j'ai un petit problème c'est que je ne vois plus l'onglet "scability" pour changer les graphismes de uefn et j'ai pas trouvé l'option pour le faire revenir ?

Delay nodes occasionally don't fire the "Completed" output in a nativized build

Undefined sysmbol: typeinfo for AActor when cross-compile linux dedicated server on windows

Bullet replication problem. The players sees each other but does not see the bullet