Unreal Engine Issues
Unreal Engine Issues
Delta struct serialized fast arrays replicating new elements with no changelist
UE - Networking - Jun 14, 2021There is a scenario where delta struct serialized fast arrays can replicate changes that introduce additional elements to the array, but without changelists containing the new data. This needs furt ...
Creating an AnimStreamable asset immediately crashes the editor
UE - Anim - Runtime - Feb 6, 2024When creating an anim streamable we immediately fail a check in the compression code in FCompressibleAnimData::FetchData: checkf(AnimSequence, TEXT("Invalid animation sequence while trying to fetc ...
[CrashReport] Assertion failed: !Export.ClassIndex.IsNull() | UPackage::Save()
UE - Foundation - Core - Cooker - Sep 20, 2017This is a somewhat common crash coming out of the 4.17 release. User Descriptionsclicked Launch->Firefox. This is the same project with in-game video-screens which has been crashing on Launch for W ...
InlineEditConditionToggle behavior present for UProperties even when InlineEditConditionToggle property specifier is not used
UE - Editor - Workflow Systems - Jun 6, 2024Reported by customer: It seems like in some cases, even when the InlineEditConditionToggle property specifier is not used, the behavior it enables is turned on anyway. It's possible to disable it w ...
Attached Project Crashes While Opening After Conversion From 4.10 to 4.11
UE - Foundation - Core - May 3, 2016The attached project is now crashing after being upgraded from 4.10.4 to 4.11.2. This crash also occurs when attempting to open a copy of the project in 4.12 Preview 1. After further investigation ...
[CrashReport] UE4Editor_Core!FStatsThreadState::ScanForAdvance() [statsdata.cpp:732]
UE - Foundation - Core - Aug 10, 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: Assertion failed: Item.NameAndInfo ...
Setting color in linear color struct variable within another struct crashes the editor
UE - Gameplay - Blueprint - Jun 16, 2016Setting color in linear color struct variable within another struct crashes the editor. Frequency: 4/4 Regression (yes) issue (does not) occur in 4.11.2 ...
Creating a Blueprintable Struct that contains a Tmap results in Editor Crash
Tools - Sep 6, 2019Any blueprint with a TArray of a struct containing a TMap crashes the editor when adding elements ...
Surface snapping attached actors cause unexpected behavior
Tools - May 17, 2019Surface snapping causes erratic changes in scale to StaticMeshActors that have children of the same type. The user also has provided a potential solution to this bug (Please see the code below. N ...
[CrashReport] UE4Editor_CoreUObject!UObjectBase::IsValidLowLevelFast() [uobjectbase.cpp:294]
UE - Gameplay - Blueprint - Aug 15, 2017This is a trending crash coming out of the 4.17 release. Users have not provided useful descriptions of their actions when the crash occurred. User Descriptionschecking stuff on internet. what does ...