Unreal Engine Issues
Unreal Engine Issues
Raytraced Shadows render incorrectly in a project that has been converted from 5.0.3 to 5.1.1 to 5.2
UE - Graphics Features - Ray Tracing - May 16, 2023Version to VersionResultsNew 5.0.3 project to 5.1.1Works as ExpectedNew 5.1.1 project to 5.2Works as ExpectedNew 5.0.3 project to 5.1.1 to 5.2Bug OccursNew 5.0.3 project to 5.2 Bug Occurs The scene ...
Texture streaming and player input broken on iPhone 6 and 6+
UE - Platform - Mobile - Jun 30, 2016Level streaming and player input seem to be broken on iPhone 6 and 6+ This issue was observed during the recurring mobile smoke. ...
Geometry Collection's Chaos Cache Static Pose Scrubbing broken in 5.6 due to Custom Renderer GeometryCollectionRootProxyRenderer
UE - Simulation - Physics - Destruction - Aug 26, 2025Geometry Collection's Chaos Cache Static Pose Scrubbing broken in 5.6 due to Custom Renderer GeometryCollectionRootProxyRenderer. The licensee has provided his analysis: In 5.6, when creating a Geo ...
Merging Splines causes Engine to Crash in 5.1
UE - World Creation - Worldbuilding Tools - Merge Actor - Dec 15, 2022Attempting to merge two spline actors causes the Engine to crash. This issue occurs with the Steps to Reproduce regardless if there are more branches added to the tree branch spline/enabled, and reg ...
Unable to select foliage by left clicking after 1.5 k foliage meshes placed
UE - World Creation - Worldbuilding Tools - Foliage - Aug 28, 2017When using the foliage tool, once the mesh count reaches around 1.5k and higher you will be unable to select individual meshes by using the mouse. The lasso tool and the select all tool work as inte ...
Changing the mass for a Destructible asset does not affect it
UE - Simulation - Physics - Destruction - Nov 19, 2014DESCRIPTION: Changing the mass of a Destruction asset does not affect it. In comparison doing the same for a static mesh set to simulate physics will adjust accordingly. Forums Post: https://forum ...
UAnimSequenceBase::GetNumberOfFrames off by 1
OLD - Anim - Sep 10, 2019Creating a montage from a default frame rate and rate scale sequence reports 1 less frame than the sequence. The difference is a result of UAnimSequence overriding UAnimSequenceBase::GetNumberOfFram ...
NavMesh does not update properly when "Can Ever Affect Navigation" is toggled
UE - AI - Mar 27, 2015if I place a mesh with "Can Ever Affect Navigation" set to true, then set it to false, it will leave the NavMesh with a bugged "hole" that AI does not path around correctly (causing the "Blocked" er ...
Materials with Subsurface Profile not affected by Opacity value
UE - Graphics Features - Oct 24, 2017A material with Shading Model set to Subsurface Profile is no longer affected by Opacity value in 4.17, 4.18, and 4.19 (Main) but was previously working as intended in 4.16. This is a regression. ...
Radial Impulse does not affect objects unless it can affect both center of mass and collision if center of mass is outside of collision
UE - Simulation - Physics - Oct 17, 2016Firing a radial impulse does not affect an object whose center of mass is located outside of its' collision unless both the center and the collision are simultaneously affected by the same force. ...