Unreal Engine Issues
Unreal Engine Issues
Crash when clicking "Reset to Default" button on the Details Panel for the MaterialAttributeLayers material node.
UE - Rendering - Architecture - Materials - Jul 15, 2025This crash repros from at least UE 5.3 and up to latest. The following assert is hit: Assertion failed: (Index >= 0) & (Index < ArrayNum) [Link Removed] [Line: 1067] Array index out of bounds: 0 in ...
Cook errors with landscape cross-level spline meshes
UE - LD & Modeling - Terrain - Landscape - Dec 18, 2015Licensee is using a modified engine but has a workaround, we need to verify that the same doesn't happen in vanilla UE4 and fix if it does. ...
T_Wood_Pine_D Asset has Offset Alpha Channel
Docs - Samples - Sep 12, 2016The alpha channel seems to be offset in the x and y by 1024 pixels this has been fixed and attached for analysis. ...
Events on frame 0 fire twice
UE - Anim - Sequencer - Jan 17, 2017Regression - does not occur in 4.13.2 or 4.14.3 Does occur in Dev-Sequencer ...
Hot reloading newly created C++ project compiles modules
UE - Foundation - Core - Apr 25, 2017This is a regression from 4.15.2 and occurs on both Windows and Mac. Affects both Binary and Github builds. ...
Ensure undoing pin split - Found K2Node_CallFunction_429 ('K2Node_CallFunction') that does not belong to EventGraph.
UE - Gameplay - Blueprint Editor - Sep 15, 2017REGRESSION: Yes, does not occur in 4.17.2 Ensure occurs when undoing the splitting of a pin. ...
Some Niagara Fluid systems are not visible in a packaged project
UE - Niagara - Jun 7, 2022Previously packaging caused a crash with this system. This was fixed, but now the system is no longer visible when packaged. ...
WorldPartition: Attached Actors within Level Instances save level offset bounds
UE - World Creation - Worldbuilding Tools - Level Instances - May 9, 2023The proposed fix is implemented in CL 25389340 but needs further testing to make sure there are no issues caused by it. ...
WorldPartitionActorDescs for LevelInstanceActors are broken when migrating world partitioned level
UE - World Creation - Worldbuilding Tools - Level Instances - Jun 13, 2023WorldPartionActorDescs will be restored to the correct properties when resaved. They can also be fixed by the WorldPartitionResaveActorsBuilder commandlet. ...
Result pin of Cast Node of ControlRig can not break
UE - Anim - Rigging - Control Rig - Jul 26, 2023In UE5.1, the Result pin of the ControlRig cast node could be broken, but it cannot be broken from UE5.2. ...