Unreal Engine Issues

Adding "Add Velocity" module to event handler stage causes ensure (ensureMsg)

Adding a module which has Required Dependencies (such as "Add Velocity") to event handler stage causes ensureMsg. > > In system /Game/NewNiagaraSystem.NewNiagaraSystem, module AddVelocity (NiagaraN ...

Editor will crash on attempt to load a previously-saved Blueprint asset with a serialized default subobject containing a serialized static array of two or more nested subobject instances.

A crash will result if a Blueprint class that's based on a native C++ class containing two or more nested, explicitly-instanced subobjects referenced by a fixed-size object array property are serial ...

VT Material Instance Crash - "ProducerDesc.BlockHeightInTiles << MipBias == BlockHeightInTiles"

Assertion failed: ProducerDesc.BlockHeightInTiles << MipBias == BlockHeightInTiles [Link Removed] [Line: 229] ...

Crash when moving map assets used as level instances

[Interchange] Ensure when re-importing an asset that was import with a blueprint pipeline

The issue is in UInterchangeAssetImportData::ProcessPipelinesCache() The following iteration do not find blueprint pipeline, not sure about python pipeline, it need to be test. TMap<FString, UClas ...

Paper2D: Editor hangs when assigning Sprite Atlas Group to Sprite

In UE 5.3 and later, assigning a Sprite Atlas Group to a UPaperSprite asset can cause the editor to hang and eventually crash. This behavior has been reproduced in 5.3, 5.6, and a recent UE5-main so ...

"StaticFindFirstObject: Ambiguous object name" on delegates with timelines in packed level actors

Bone names of ~100 characters or longer crash the editor when baking to control rig

This is an issue with inconsistencies over rig names and how control names are generated. We expect that a control name will be appended with _CONTROL or _CURVE_CONTROL. But because URigHierarchy: ...

Creating an AnimStreamable asset immediately crashes the editor

When creating an anim streamable we immediately fail a check in the compression code in FCompressibleAnimData::FetchData: checkf(AnimSequence, TEXT("Invalid animation sequence while trying to fetc ...

Editor crash while saving asset during cook operation

It is possible to experience an editor crash in 5.5.4 when the cook process generates a warning that references an asset while the editor is saving. It seems that during a save operation, the code t ...