Unreal Engine Issues
Unreal Engine Issues
Adding Images: The image header is unrecognized
RC - Editor - Feb 14, 2025This issue occurs only on Windows 11 24H2, but it affects all RealityCapture versions on this OS. It is allso not possible to open the images with the Windows Photos App. ...
Changing the “DistanceField Trace Distance” requires rebuilding the lightmaps
UE - Graphics Features - Feb 18, 2025Changing the “DistanceField Trace Distance” requires rebuilding the lightmaps even though the valu never affect light baking process in Lightmass. ...
Video material broken on Mac M3+ (sm6)
TM - Rendering - Oct 21, 2025On Mac devices, the video material in the viewport will display incorrectly, appearing stretched significantly. This only seems to affect the viewport and not rendered exports. ...
BlueprintNativeEvents with no return value (void) cannot be overridden in Blueprints.
UE - Gameplay - Blueprint - Dec 22, 2014BlueprintNativeEvents (and BlueprintImplementableEvents) are not available to be overridden in a Blueprint Graph if they do not return a value. This affects both functions present in source code, as ...
Incorrect AO rendering when that using SSGI.HalfRes
UE - Graphics Features - Apr 6, 2021This problem seems to have started from 4.26. Also, setting r.DiffuseIndirect.Denoiser=0 will increase the noise but invisible the rendering in problem. ...
Non instanced subobject gets set to none after compiling editor
UE - Gameplay - Components - Apr 2, 2021Non Instanced Subobject sets to none after compiling the blueprint. Please see attached video for more details. Checking regression in 4.26 now ...
There is a moment of T pause when Post Roll Frames is enabled and snapping is enabled
UE - Anim - Sequencer - Apr 19, 2021When I turn off snap, the problem does not occur The problem does not occur in 4.24.3 and 4.25.4 Occurs in 4.26.2 and UE4main ...
Rotator visual helper appears in local Presentation exports
TM - Tools - Nov 6, 2025Reported in SF [Link Removed] The Rotator animator's visual helpers will be visible in locally exported Presentations when it should be hidden. This does not affect the Translator animator. ...
Converting BSP to static mesh on Linux causes the editor to crash
UE - Platform - Linux - Mar 11, 2016Converting a BSP to a static mesh will freeze and crash the editor when done on Linux. Windows does not exhibit the same conversion crash. ...
Font advance and fallback font metrics have issues in 4.16
UE - Editor - UI Systems - Slate - Jun 5, 2017There were some font regressions in 4.16 that we've since fixed (CL# 3456916 and CL# 3425681). These are affecting live users so we should get them into the next 4.16 build. ...