Unreal Engine Issues
Unreal Engine Issues
Lighting Build Fails With High Density Foliage
UE - World Creation - Worldbuilding Tools - Foliage - Jan 16, 2018Trying to build lighting on a map with high density foliage will fail lighting build or cause the editor to crash. This occurs in 4.15, 4.16, 4.17, and 4.18. There have been multiple reports of this ...
Geometry Collection's Chaos Cache Static Pose Scrubbing broken in 5.6 due to Custom Renderer GeometryCollectionRootProxyRenderer
UE - Simulation - Visual - 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 ...
Certain UPROPERTY values are not updated during auto-recompile
UE - Gameplay - Blueprint - Aug 4, 2016Sometimes manual recompile is required to make a blueprint actually recompile data-only changes, but not always. If the last manual compile was with default values, then changes are not updated. If ...
Crash when using pooled widgets in an invalidation panel
UE - Editor - UI Systems - Slate - Aug 3, 2016Widgets that are pooled are given a pointer to a layout cache, if the layout cache dies, the pointer is bogus. Going to need to move over to using weak pointers to avoid the crash, will add some pe ...
ContentExamples PostProcessing map demo 1.13 post process volume screen percentage is not low enough
Docs - Samples - Aug 19, 2016The post process volume in ContentExamples for Screen Percentage is set to 90 which is too high to notice a difference. The documentation has it at 25 here: https://docs.unrealengine.com/latest/INT/ ...
ContentExamples: Physics Level Multiple misspellings
Docs - Samples - Jan 19, 2017Physics Example 1.1 "StaticMesh" is one word The word Static Mesh is 2 separate words in unreal documentation https://docs.unrealengine.com/latest/INT/Engine/Content/Types/StaticMeshes/ ...
HotReload fails with Linker errors when using Visual Studio 2017
UE - Foundation - Core - Apr 24, 2017I had a tester with VS 2015 run through the steps I failed with, and they were unable to repro. JamesF was able to repro the issue on VS 2017. JamesF pointed out that this does not occur is you cho ...
Sequencer capture movie rendering is issue.
UE - Anim - Sequencer - Jul 13, 2017This problem always occured in 4.16.0, 4.16.2. It does not occur 4.15.3. ・Reproduction Project Linkhttps://udn.unrealengine.com/storage/attachments/299111-captureerror-416.zip ...
Directx12 crashes with OOM
UE - Graphics Features - May 7, 2018In editor, when running a task that does not issue a BeginFrame/EndFrame for a long time, the GPU will eventually run out of memory. See UDN: https://udn.unrealengine.com/questions/431450/directx1 ...
Investigate state of embedded and dynamic framework support on iOS
UE - Platform - Apple - Jun 5, 2020Licensee reports it's not possible to use the dynamic framework used by the latest release of the iOS version BugFender - [Link Removed] Licensee bug report: : https://github.com/bugfender/Bugfende ...