Unreal Engine Issues
Unreal Engine Issues
Child Actor component is duplicated in Standalone Game
UE - Gameplay - Jan 12, 2017Child Actor component is duplicated in Standalone Game. No other play modes or packaged game are affected. The additional actor will disappear after 1 minute. *This is a regression: Doesn't occur ...
Missing binding object for component track in level sequence
UE - Anim - Sequencer - Mar 13, 2025This issue occurs when clicking on the Rebind Possesable References action in a Level Sequence editor. The component reference appears missing and won't work anymore. It is worth noting that when ...
[CrashReport] UE4Editor_BlueprintGraph!BlueprintActionFilterImpl::IsEventUnimplementable() [blueprintactionfilter.cpp:588]
UE - Gameplay - Blueprint - Jun 1, 2016This crash has been reported through the 4.12 Previews and is continuing to occur in the 4.12.0 release. Additional information about this crash is not available at this time, however it may be the ...
[Spatialization] - When a sound starts playing while the listener in in the Binaural Radius, when they exit the sound stops playing
UE - Audio - Spatialization - Nov 18, 2021If a sound starts playing while the listener is inside the binarual radius, the sound stops abruptly when they leave the radius. Does not occur if the listener starts in the binaural radius. Does no ...
Disparity in Rotation tool
Tools - Aug 31, 2016There is disparity between the two different ways of editing rotation. When using the scrubber in the details panel each value scrubbed only affects that value and the values go from 0 to 360. When ...
UMG Animations Scale Retainer Boxes When Only Translating them
UE - Editor - UI Systems - Feb 28, 2020When translating a retainer box in an UMG animation the scale of the retainer box is also affected. Attached is a 4.23 example project. Found in 4.24.3 CL#11590370 Reproduced in 4.23.1 CL#9631420, ...
Engine crashes when building GPU Lightmass in large scenes
UE - Graphics Features - May 12, 2022Engine crashes when building GPU lightmass in larger scenes. This does not occur on smaller maps like the Unreal Engine Templates. I was able to reproduce this issue in CitySamples SmallCity map. T ...
CA_VALID_POINTER and CA_CHECK_RETVAL static analysis annotations broken
UE - CoreTech - Oct 13, 2023We had some code using the CA_VALID_POINTER and CA_CHECK_RETVAL annotations which had been working fine up until the 5.3 engine release. In 5.3, we started getting the following compile errors in a ...
Crash when exposing a TOptional<FName> or TOptional<FText> to the editor through a UProperty.
UE - Editor - Workflow Systems - Mar 25, 2025Support for editor-exposed uproperties of type TOptional<T> has been added by CL 28199740 on september 2023. However, since then until today in UE 5.5, a crash can happen when exposing TOptional<FNa ...
Crash Occurs When Attempting to Pass a Struct Containing an int64 into a Blueprint Function
UE - Gameplay - Blueprint - Feb 17, 2016Attempting to pass a struct containing a variable of a type that is not compatible with blueprints into a blueprint function causes the editor to crash upon PIE. Found in 4.10.2 binary. Reproduced ...