Unreal Engine Issues
Unreal Engine Issues
TMap where key is an FString: initializer list will accept bad MakeTuple
UE - Core - Systems - Sep 2, 2026POST LINK: https://forums.unrealengine.com/t/tmap-where-key-is-an-fstring-initializer-list-will-accept-bad-maketuple/2747443 POST BODY:Summary A TMap where the key is an FString can be created lik ...
Linux: UI scale is sometimes not 1.0 on non-high-DPI monitors
UE - Platform - Linux - Nov 7, 2017At the moment, UI scale is calculated on Linux from physical monitor dimensions (obtained ultimately from EDID) and not system scale. The granularity is 0.25, so scale can be 0.25, 0.5, 0.75, 1, 1.2 ...
Assertion failed in FAudioDevice::UnregisterSoundClass when GC
UE - Audio - Aug 13, 2018The licensee reported that check(IsInAudioThread()) was failed in FAudioDevice::UnregisterSoundClass when GC. The following is the call stack: 1 #00 pc 030d7b58 libUE4.so HandleError (/home/pirates ...
[CrashReport] UE4Editor-SlateCore.dylib!SWidget::FindChildGeometry(FGeometry const&, TSharedRef<SWidget,()
UE - Editor - UI Systems - Slate - Jul 20, 2017This is a common crash affecting Mac users in 4.16, and going back at least to 4.11. This seems to be a continuation of [Link Removed], which was closed as cannot repro. User Descriptionswas looki ...
[CrashReport] UE4Editor_PropertyEditor!SPropertyEditorAsset::GetObjectPropertyClass() [spropertyeditorasset.cpp:966]
Tools - Nov 23, 2016This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Error message: Assertion failed: Class != NULL [Link Removed] [Line: 965] Source Context: 95 ...
iOS Metal-based build crashes at launch with sub-levels.
Tools - May 16, 2016Application crashes when deploying a game to iOS with Metal enabled. This has only been reproduced if a sub-level has been added to the starting level within the project. This seems to only happen ...
Crash when upgrading Nvidia GFX driver from Version 457.85 with open Project
UE - Rendering - Features - Nov 18, 2022Repro Rate: 5/5 Summary: When opening a Project in UE version 5.1.0 with Nvidia GFX driver version ###, the user is notified that there are known issues with this driver through a pop-up:WARNING: K ...
[CrashReport] UE4Editor-Core.dylib!FArchiveFileReaderGeneric::InternalPrecache()
UE - Platform - Apple - May 23, 2016This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. [2016.08.05-09.09.15:492][ 0]LogFileManager:Warni ...
[CrashReport] UE4Editor_UnrealEd!FEdGraphUtilities::PostProcessPastedNodes() [edgraphutilities.cpp:138]
UE - Gameplay - Blueprint - Jan 24, 2017This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: Access violation - code c0000005 ( ...
[CrashReport] UE4Editor_Renderer!FRendererModule::DrawTileMesh() [renderer.cpp:51]
UE - Rendering - Architecture - Materials - Jan 12, 2017This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: Access violation - code c0000005 ( ...