Unreal Engine Issues

Check hit in FNetworkObjectList::MarkActiveInternal for dormant actor after seamless travel

When seamlessly traveling, FNetworkObjectList will have its data cleared. However, because FNetworkObjectList::Reset is called before FNetworkObjectList::ResetDormancyState, AllNetworkObjects will b ...

GameplayAbilitiesSystem: GameplayCues OnRemoved never firing

This behaviour was introduced in the following changelists in 5.3: CLs 25371706 and 25407985 https://github.com/EpicGames/UnrealEngine/commit/6e985ceeb98bc0d166756ccd3e3c0b0350d02265https://github. ...

Media Player can't continue to play after the progress bar is dragged.

This bug occurs in 5.3 version. It's ok in 5.2 version. ...

Reflection Capture primitive invalidation in 5.3.1 causes massive hitches.

LLM: Delete LLM_IF_ENABLED if it is no longer a performance benefit, or convert all allocs and frees to use it if it still is.

The macros LLM and LLM_IF_ENABLED behave identically but are slightly different from a performance standpoint. For consistency all allocs and frees should use the same one. Measure the cost of a co ...

Shadow in Sky Reflections

It looks like the DistantScreenTrace(...) in LumenScreenTracing.ush reports a false positive hit in the dark regions. Using screen trace visualization reports the distance in these regions as 65535. ...

Creating a control rig via FControlRigBlueprintActions::CreateNewControlRigAsset crashes

FControlRigBlueprintActions::CreateNewControlRigAsset is crashing in ResolveObjectHandleNoRead.  Looking at the control rig in UControlRigBlueprint::Serialize, it's marked as pendingkill but I'm uns ...

[AI] BTService_RunEQS has rare crash during OnQueryFinished

The crash log shows Error: Ensure condition failed: MyMemory->RequestID != INDEX_NONE [UE5\Engine\Source\Runtime\AIModule\Private\BehaviorTree\Services\BTService_RunEQS.cpp][Line: 93]. Other logs ha ...

Crash when opening or editing a DataTable with a Row Structure that contains a Curve

If a DataTable Asset is created with a Row Structure that contains a member variable of type Curve, the Editor will crash when attempting to open it while it has no rows. It will also crash when edi ...

ComponentOverlapMultiByChannel with a rotated simple collision PrimComp misses overlap vs. complex collision

UWorld::ComponentOverlapMultiByChannel and internally, the call to FBodyInstance::OverlapMulti, misses overlaps and blocking hits when the PrimComp's (the component used to test overlaps) mesh uses ...