Unreal Engine Issues
Unreal Engine Issues
Unloading level during PIE leads to editor crash
Tools - Dec 6, 2017Unloading level during PIE seems to lead to an editor crash. Most easily reproducible by enabling malloc stomp. ...
CSM receiver culling issue on Mobile
UE - Platform - Mobile - Apr 27, 2019FBX Import - 5.5.4 - Morph targets 1 frame offset
UE - Editor - Content Pipeline - FBX - Feb 17, 2025Morph targets work! Yay! But found another issue. Basically import an fbx with multiple animated morph targets applied to it. The morph change shape over 1 frame and for some reason in 5.5.4, there' ...
Inconsistent Nanite raster bin debug visualisation colors
UE - Graphics Features - Nanite - Oct 20, 2025The raster bin debug colors are not always consistent when a static mesh and spline mesh are present ...
Overriding blueprint function first in grandchild class then in child class renames grandchild function
UE - Gameplay - Blueprint - Nov 28, 2017If you have a blueprint A with a child blueprint B, and child of the child blueprint C, overriding a function with a return parameter originally declared in blueprint A in the blueprint C, and then ...
Dynamic (transient) material instance assignment lost if object spawnable
UE - Anim - Sequencer - Jun 21, 2024Material Instance Dynamic assigned to Spawnable objects with Editor Utility Widget get reverted when hit the Save button in Sequencer. This appears to come from the Material Instance Dynamic not be ...
A sampling result of DistanceFieldAOHistory is shifted to a wrong position.
UE - Rendering - Graphics Features - Aug 21, 2024DistanceFieldAOHistory introduces ghosting at low scalability and low screen percentages. This can lead to AO artifacts and a ghosting effect from the character. This issue was also observed on //U ...
MaxDrawDistance set by CullDistanceVolume is lost on saving sublevel
UE - World Creation - Worldbuilding Tools - Feb 21, 2025The UpdateCullDistanceVolumes behavior when saving was changed by CL-36588597. Only CullDistanceVolumes in the same sublevel can affect Max Draw Distance. ...
Imported Maya animation seems to be 1-frame off in Unreal
OLD - Anim - Apr 5, 2016A licensee reported this issue on UDN. They are seeing a discrepancy with animations imported from Maya. In this case, they appear to be off by 1-frame. We've talked about this on Slack and I know ...
Live Link Pose node silently fails in Standalone mode due to incorrect Module type
OLD - Anim - Jul 17, 2018LiveLinkEditor Module is flagged as "Editor" and not "Developer" causing the Anim Node "Live Link Pose" to silently fail in Standalone mode. The node works correctly in PIE and in packaged builds. ...