Unreal Engine Issues

IsPlayInMobilePreview does not return true when using Mobile Preview

A user has reported that the IsPlayInMobilePreview function does not return true when playing in Mobile Preview. From looking at the function, it seems to be looking specifically for the commandline ...

Crash on loading pre-4.20 cloth data when compute skin cache is enabled in 4.21

According to information from the licensee, the else clause was added to "FSkeletalMeshLODModel::(GetClothMappingData()" at CL 4437969 , but if it is the cloth data existing from 4.20 or earlier, it ...

Animation import with "Force Front X Axis" is broken until a re-import

Skeletalmesh regenerate LODs loose the section settings

Trigger Montage Ended Event results in Unhanded Exception

TriggerMontageEndedEvent is calling RemoveAtSwap after the NotifyEnd callback which is not safe if the ActiveAninNotifyState array is modified by the callback. WorkAround:   Add a Delay node befo ...

Fill Data Table from CSV File crashes editor if the data table is open

Attempting to use the Fill Data Table from CSV File node will result in a crash if the CSV file is open when running. ...

Flipbook rendering distortion when adding local offset to Capsule Component.

Adding local offset to Paper Flipbook in UE.4.22 results in rendering distortion. ...

SetPhysMaterialOverride does not work properly when using Weld Simulated Bodies enabled AttachToComponent func

When using Weld Simulated Bodies enabled AttachToComponent func, the child Primitive Component's BodyIstance ActorHandle is released. As a result, in BodyInstance.cpp, the judgment of FPhysicsComman ...

Action RPG- ARPG CharacterBase::GetHealth() Null Crash

In Action RPG Sample, NPC Blueprints "NPC_Goblin_Level_01,02.03"  cannot be Duplicated.   Crash results lead to ARPGCharacterBase.Cpp Get Health function. float ARPGCharacterBase::GetHealth() const ...

Crash when creating an animation

The editor crashes when trying to add an animation key frame for the row fill setting for a grid panel ...