Assertion Error When Upgrading to UE 5.6 – Sequencer Related Crash

We have the same issues on multiple assets after switching to 5.6

The only temporary workaround is to do

			if(Object->HasAnyFlags(RF_NeedLoad) && Object->HasAnyFlags(RF_WasLoaded))
			{
				Object->ClearFlags(RF_NeedLoad);
			}

before the failed check code ( We are also hitting the same check in UObject::ConditionalPostLoad() )

It could potentially lead to other issues, but at least you could open the editor until the proper fix is made