Bug report UE-148539 seems to have a more detailed analysis on the problem/replication of it.
When a camera sequence plays in a camera shake base bp I get an assertion fail.
Assertion failed: DestAllocationIndex != SourceAllocationIndex [File:D:\build++UE5\Sync\Engine\Source\Runtime\MovieScene\Private\EntitySystem\MovieSceneEntityManager.cpp] [Line: 1970]
Is there any way to workaround this for the time being?