Unreal Engine Issues
Unreal Engine Issues
GAS and single process PIE: modifiable static variables accessed by server and client
UE - Gameplay - Gameplay Ability System - Nov 16, 2022See: UAbilitySystemGlobals::HandlePreLoadMap GAS features static variables that are modified by both server and client, thus result in issues in single process PIE where they access the same memory ...
Chaos Trailing Events not exposed to Blueprints and only accessible via Niagara Chaos DI
UE - Simulation - Visual - Apr 22, 2025Chaos Trailing Events not exposed to Blueprints and only accessible via Niagara Chaos DI. The licensee noticed that the Trailing event is not available to BPs. It's expected that the same data avail ...
UNetDriver server-side hitch results in ActorInfo->NextUpdateTime far into future
UE - Networking - Feb 16, 2024A high UWorld::Tick DeltaSeconds (i.e. GameThread hitch) results in a high UNetDriver::TickFlush DeltaSeconds. This DeltaSeconds can high (many seconds) if the hitch is long. This value then affects ...
The Remove-On-Break feature, set on Fracture Mode on Geometry Collections, stops shrinking and shows strange behaviors
UE - Simulation - Visual - Oct 15, 2024The Remove-On-Break (ROB) feature, set on Fracture Mode on Geometry Collections (GC), was supposed to make the particle shrink until it vanishes. When the GC goes to sleep the shrinking stops and sh ...
[CrashReport] UE4Editor_UnrealEd!TSet<FEditorUndoClient * | SActorDetails::~SActorDetails
Tools - Sep 20, 2017This is a somewhat common crash coming out of 4.16 and 4.17. Users have not provided any description of their actions when the crash occurred. The top line of the callstack and the source context ...
ENGINE: CRASH: One off Editor Crash with ANavLinkProxy::GetComponentsBoundingBox() navlinkproxy.cpp:189
UE - AI - Oct 20, 2016One off editor crash. [Link Removed] Error Message Access violation - code c0000005 (first/second chance not available) Call Stack of Most Recent Crash ANavLinkProxy::GetComponentsBoundingBox() na ...
[CrashReport] UE4Editor_CoreUObject!UObjectBaseUtility::GetOutermost() [uobjectbaseutility.cpp:118]
UE - LD & Modeling - Terrain - Landscape - Jun 6, 2016This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Error message: Access violation - code c0000005 (first/second chance not available) Source C ...
[CrashReport] Assertion failed: GetOuter()==NULL in UE4Editor_Core!FText::IsEmpty
Tools - Apr 17, 2017This is a top 10 crash affecting many users. It is believed it may be related to the auto listen / reimport feature. The callstack shares similarities to past tickets, such as:[Link Removed][Link R ...
Auto-Save failing, pulling old saves and blocks users from continuing
UE - Editor - Workflow Systems - May 15, 2023Reporting an issue where are users are getting prompted to auto-save, but then it appears to fail and asks them to manually save. They're being prompted with outdated save files, but get stuck in a ...
Crash on play if a BP uses a ClearInstances node followed by an AddInstance node
UE - Graphics Features - Jul 21, 2017Crash on play if a BP manipulates a InstancedStaticMeshComponent by using a ClearInstances node followed by an AddInstance node. This is a blocker for the licensee. This is a regression: Working ...