Unreal Engine Issues
Unreal Engine Issues
Instanced Static Meshes ignore max World Position Offset Displacement for bounds after UpdateInstanceTransform is called
UE - Rendering - Graphics Features - Jun 18, 2025When an Instanced Static Mesh Component (ISMC) uses a material with a non-zero Max World Position Offset Displacement, the bounds are correctly expanded at initialization. However, after calling Upd ...
Virtual Texture Collection Indexing Not Working
UE - Rendering - Architecture - RHI - Oct 30, 2025Textures at an index, other than 0, cannot be sampled from a Virtual Texture Collection in a material. When using the Texture Collection and Texture Object From Collection material nodes, with a Vir ...
Child actor component cannot be selected within blueprint viewport
UE - Gameplay - Blueprint - Nov 24, 2015Child actor component cannot be selected within blueprint viewport. The transform can be altered and, if selected within the Components tab, the child actor component can be moved within the viewpor ...
Crash from FGameplayDebugger when pressing PIE after Dragging PlayerController to Empty Player Component
UE - AI - Jun 16, 2015A crash occurs after dragging an 'Empty Character' actor into the viewport and attempting to add the 'PuzzlePlayerController' as a component by dragging it into the components list via the 'Details' ...
Changing the name of a variable that references a Blackboard Key inside a Task removes the Key reference inside the Task's node in the Behavior Tree
UE - Gameplay - Blueprint - Oct 5, 2015Changing the name of a variable that references a Blackboard Key inside a Task removes the Key reference inside the Task's node in the Behavior Tree. Clicking on the Behavior Tree's Task node that r ...
While using an Actor Component, Simulate Physics cannot be toggled with a Click Event if Substepping is enabled
UE - Simulation - Physics - Apr 29, 2015While using an Actor Component, Simulate Physics cannot be toggled with a Click Event if Substepping is enabled. If Substepping is off, everything works fine. This seems to only happen if an Actor ...
MOBILE PACKAGING WIZARD cannot locate maps if the project is placed in the default path.
Tools - Sep 29, 2016MOBILE PACKAGING WIZARD cannot find maps when the project's path is located in the default path (C:\Users\User.Account\Documents\Unreal Projects) ...
Startup Movies Fail to Play when Audio Devices are Disabled
Tools - Feb 1, 2016If a user launches a project in Standalone mode and has a Startup movie while the audio devices on the computer are disabled, the movie will fail to play. As soon as you re-enable an audio device, ...
Material Previews Reflection skybox are broken in 4.12
UE - Graphics Features - May 3, 2016Materials are rendering now in the preview pane with artifacts caused by the change in the reflection skybox. This can clearly be seen in 4.12 and later by enabling the reflections view in the previ ...
Landscape Grass Foliage Instances Culling Incorrectly
UE - World Creation - Worldbuilding Tools - Foliage - Feb 20, 2017Foliage instances are culling incorrectly and seem to cull based off of the landscape components and/or entire foliage clusters. Regression? Yes, this issue does not occur in the 4.14.3 binary rele ...