Unreal Engine Issues

Crash when Copy/Pasting from Older UE Versions

When copy/pasting scene objects from older Unreal versions into Unreal 5.1, the editor will crash. ...

Specifying a object type variable in a Sequencer event track payload asserts

Specifying a object type variable in a Sequencer event track payload asserts ...

Crash undoing "replace actor with" when replaced object constructs child actors

The problem seems to be that the construction scripts doubled up all the BlueprintCreatedComponents, so there are now 2 scene components(actually the same one duplicated) and now 2 child actor compo ...

Crash when unloading World Composition tiles using Landscape

When unloading a tile of a World Composition map in UE5, a crash occurs when trying to deference a null pointer (World->PersistentLevel->bIsVisible) in FWorldTileModel::FWorldTileModel():// Assign l ...

Changing class of Sub Anim Instance will crash if tag is specified

Switching sub anim instances that have a set tag will crash the editor when compiled. This is likely due to the use of Tag as the object name. The tag does not change, and the old UObject is still a ...

Dataprep crash when creating a parameter from a datatable asset or any asset

Trying to set/change an element of a fixed-size TAssetPtr array in the Editor results in a crash.

Trying to set the value of an element of a fixed-size TAssetPtr array in the Editor results in the Editor crashing. This did not occur in 4.13. The attached callstack is from debugging the project ...

Crash running construction script after compiling BP function library

Editor can assert when changing the signature of an editor authored Blueprint Library Function (FuncA) if that function is called from a Blueprint Library Function (FuncB) via an actor's constructio ...

Editor crash loading a Blueprint asset when a child scene component C++ type changes to a non-scene component type.

Changing the type of an existing child scene component to be a non-scene component type triggers some fixup code at load time which attempts to remove the node from its current position in the scene ...

Breaking a level instance can not remove the level instance from world

Currently there is no stable way to break level instances ...