Unreal Engine Issues
Unreal Engine Issues
World Partition - Deleted actors can become unloaded prior to saving
UE - World Creation - Worldbuilding Tools - World Partition - Apr 11, 2025In world partition levels, deleted actors can become unexpectedly unloaded prior to saving, causing loss of work. Specifically, this issue occurs after the undo history has been cleared (either manu ...
Typo in "BaseEditorSettings.ini": under section [/Script/UnrealEd.ContentBrowserSettings], key "DisplayPluginFolder" (singular) should read "DisplayPluginFolders" (plural).
UE - Editor - Oct 11, 2025File "<ENGINE_PATH>/Engine/Config/BaseEditorSettings.ini" contains the following setting: [/Script/UnrealEd.ContentBrowserSettings] ; Whether to display the game project plugins in the Content Brow ...
Incorrect Velocity Calculation at Animation Sequence Transitions in Level Sequence
zComponent - Archive - Feb 18, 2025When adding an Animation Track to a Level Sequence and placing Animation Sequences back-to-back without gaps, the velocity can be miscalculated at the transition between sequences. This issue occur ...
[AI] WP Dynamic navmesh fails to rebuild tiles with actors that are loaded but not part of the base navmesh.
UE - Runtime - Character - Feb 18, 2025WP dynamic navmesh does not properly react to actors or navigation modifiers that are loaded in areas that the navmesh has not yet streamed into. Although the actors/modifiers are not part of the ba ...
[CrashReport] Assertion failed: !bRequireNormalization - UE4Editor_Landscape!ULandscapeComponent::ReplaceLayer()
UE - LD & Modeling - Terrain - Landscape - Jul 19, 2017This is a common crash affecting users in 4.16, and has occurred since at least 4.14. Over 200 unique users have been affected, though they have provided little information. User DescriptionsI am a ...
LogHttp:Warning: 0000024E4A050880 Response Header Content - Issue with the Survey
Tools - Feb 28, 2017LogHTTP:Warnings are populating in the output log when the editor opens any project in 4.15.1 This is not occurring in //UE4/Main This is not occurring in 4.14.3 Marking as regression WarningsLo ...
[CrashReport] UE4Editor_CoreUObject!UObjectBaseUtility::GetOutermost() [uobjectbaseutility.cpp:118]
Tools - Sep 8, 2016This Jira was created from CrashReports submitted by the public due to the high number of occurrences. User DescriptionsSwitching levels, then when prompted to save current unsaved level, selecting ...
[CrashReport] UE4Editor_CoreUObject!FScriptArrayHelper::EmptyAndAddUninitializedValues() [unrealtype.h:2703]
UE - Gameplay - Blueprint Compiler - Aug 15, 2017This is a trending crash coming out of the 4.17.0 release. Based on user descriptions, this crash occurs on Play or Compile for affected users. User DescriptionsAgain crashing when I hit playIF I C ...
iOS Launch On does not copy content to iOS/TVOS 13 devices
UE - Platform - Mobile - Aug 12, 2019DeploymentServer fails to transfer the files LogPlayLevel: ********** DEPLOY COMMAND STARTED ********** LogPlayLevel: Running: F:\UE4-Release-4.23\Engine\Binaries\DotNET\IOS\DeploymentServer.exe ...
[CrashReport] UE4Editor-ApplicationCore.dylib!invocation function for block in FMacApplication::DeferEvent()
UE - Platform - Apple - Dec 1, 2017This is an infrequent Mac crash in 4.18.1. Users have not provided any descriptions. Callstack from Log2017.11.27-02.08.07:839][947]LogMaterial: Missing cached shader map for material FLightmassMat ...