Unreal Engine Issues
Unreal Engine Issues
Editor crash on level load when bUseActorFolders is true after dragging Actor into another folder in the Outliner
UE - Engine Scaling - Streaming - OFPA - Mar 7, 2023From licensee: Hello! Our level streaming setup enables the bUseActorFolders on our levels. When moving the Actor into another folder via the Outline, the editor will crash on the next load Assert ...
Rendering of a Text Widget with Outline does not track LayerId correctly
UE - AI Workflows - UI Systems - Slate - May 27, 2025Text widget with Outline uses 2 LayerId levels to draw the outline and the text glyphs. This can be seen in function FSlateElementBatcher::AddShapedTextElement(), where lambda BuildFontGeometry() is ...
Unable to PIE + Crash after editing SColorGradingPicker
Tools - Jul 26, 2017Changing Color Grading settings of a post process volume and using "Enter" to commit changes prevents the editor from entering PIE / Simulate mode with the error message "Can't Play In Editor / Simu ...
Inaccurate dialog box displayed when trying to open a project that contains a plugin with missing binaries
UE - Foundation - Core - Aug 29, 2017In 4.17, attempting to open a project that contains a plugin with a missing .dll file results in a dialog box appearing that says that the plugin is not compatible with the current Engine version, a ...
Desynchronised playback of firstime played SoundWaves with active AudioStreamCaching
UE - Audio - Mar 25, 2020The SoundWave in the Content folder of the attached Project has been exported from Nuendo @ 120BPM 4/4, with a duration of exactly 1 Bar. The BP_Audio Actor uses the TimeSynthComponent to provide sa ...
Commonly used blueprint conversion functions should be promoted to top level category
UE - Gameplay - Blueprint - Nov 16, 2020Many useful blueprint utility nodes are buried in the Utility category and are not very discoverable by users. This leads to them choosing other nodes that are much less convenient and efficient. Th ...
nDisplay VIOSO Projection Policy broken since 5.0.3
zComponent - Archive - Nov 25, 2022Hi Sevan, I think we are having a bug: When using our calibration format “vwf” the image is slightly misaligned. Same calibration exported MPCDIv2 works good in UE. So it seems to be some issue ...
UAbilityTask_SpawnActor::BeginSpawningActor may return true when SpawnedActor contains stale value
UE - Gameplay - Gameplay Ability System - Mar 15, 2026UAbilityTask_SpawnActor::BeginSpawningActor assumes the incoming AActor*& SpawnedActor parameter is nullptr if no actor was spawned, but it does not initialize the parameter at the start of the func ...
[CrashReport] FText::IsEmpty | UTextProperty::Identical_Implementation
UE - Gameplay - Blueprint - Aug 15, 2017This is a trending crash coming out of the 4.17 release. Users have not provided any descriptions of their actions when the crash occurred. Source Context 257 FText::FText( FString&& InSo ...
Controller::OnPossessedPawnChanged broadcasts (Pawn->null) but not (null->Pawn) during AGameModeBase::RestartPlayer()
UE - Gameplay - Sep 17, 2025Context AController has a blueprint assignable delegate that fires when the possessed pawn changes. This should fire in both singleplayer and networked games. The bug is reproducible in single play ...