Unreal Engine Issues

Editor sometimes crashes when trying to compile an Animation Blueprint that extends a class with AnimInstanceProxy

Reproduced 3/3 times, issue does not occur in //UE5/Release-5.0 - CL 20979098 Binary. Confirmed Regression. Seems to work fine when compiled once, but after the 2nd or 3rd time it crashes. ...

Crash when loading Anim BP after undoing and saving "Use Shared Rule" in state machine

Reported by UDN  [Link Removed] From Slack discussion: It seems that undo-ing the transaction in UAnimStateTransitionNode::UseSharedRules, leaves the outer graph (UAnimationStateMachineGraph) wit ...

Editor crashes when edit foliage assigned to data layer in foliage mode

Check() when loading a child anim BP used as a linked instance

Check encountered by CloudChamber. Slack thread: [Link Removed] ...

Geometry Collection crashing BP Simulation when set to enable Physics via Event Graph

Reproduced 3/3 times, issue also occurs in //UE5/Release-5.0 - CL 20979098 Binary. Confirmed NOT a Regression. Issue does not occur when user Simulates in level viewport, nor when geometry collecti ...

Widget Blueprints Fail to Compile When Copying Collapsed Graphs into Functions

Collapsed blueprint nodes that are copied and pasted into a function graph of a Widget will cause a fatal error when the blueprint compiles, as seen in the callstack, and will provide the message: " ...

OnlineServices-Lobbies: Crash when host migration message is received and the next host has already left the session

A crash occurs at FindChecked in the code below.if (PreparedServiceChanges->OwnerAccountId) { InternalPublicData->OwnerAccountId = *PreparedServiceChanges->OwnerAccountId; if (bDispatchNot ...

Editor crash when searching in Add Object menu after creating a Niagara System asset in the Motion Design editor mode

Mass Agent Component implementation triggers Aggressive Default Reference Replacement ensure

Workaround: Construct the DefaultSubobject with ... = CreateDefaultSubobject<UMassAgentComponent>(TEXT("MASS"), true); The issue appears to be that the DefaultSubobject holds a pointer to the CDO ...

Camera modifier blueprint used in another blueprint crashes editor (Assert failed in edit condition code in details panel)

Changing the default values inside of a camera modifier blueprint when referencing it in another blueprint results in a crash. Tested in 4.21, 4.22, 4.23 and 4.24 ...