Using the Set console command to change a value at runtime causes a crash

UE - Gameplay - Dec 9, 2015

When using the Set command to change the value of a class at runtime, the game instance will crash with an access violation. Note: This needs to be done in Standalone or a packaged version for this ...

An InstancedStaticMesh component set to Stationary doesn't register overlaps

UE - Simulation - Physics - Dec 16, 2016

An InstancedStaticMesh component set to Stationary doesn't register overlaps. However, overlaps are registered on Static and Movable. There is also an issue where actors that start overlapped with ...

High framerates result in desyncs with clients when using a dedicated server.

UE - Networking - Apr 17, 2019

When a client operates at a high framerate on a dedicated server, their player movement will become desynced with the server. This manifests in different ways on different versions. In 4.21, it caus ...

[Feature Request] Cryptomatte for Foliage

UE - Anim - Sequencer - Jan 25, 2021

Cryptomatte implementation only looks at the HActor hitproxy type which is a different type than ISMs which use HInstancedStaticMeshInstance. ...

Substrate SSR reflections are black

UE - Graphics Features - Substrate - Dec 17, 2024

Substrate Materials do not use Screen-Space reflections. Instead, they do not have any reflections (indirect specular) on the surface. ...

Collision thickness on landscape does not appear to work

UE - Simulation - Physics - May 27, 2015

Setting the collision thickness for the landscape does not appear to have any effect on any objects colliding with it. Setting the value to a negative or a positive has no effect. ...

Set Material for a DM in the Construction script will result in a crash

UE - Simulation - Physics - Destruction - Jun 3, 2015

Setting a material in a BP construction script after setting a DM will result in a crash. This will render the BP inaccessible once the project reloads. Opening the BP will result in an instant cras ...

Crash when trying to change game mode settings

Trying to change game mode settings after restarting the editor will cause the editor to crash. ...

Setting character animation in parent BP and mesh in child BP does not play the animation in a packaged game

UE - Gameplay - Jan 21, 2015

When a child BP is used to with a skeletal mesh to play an animation set in the parent, the animation will play in editor and in standalone but will not play in a packaged game. ...

Changing a node to a pure function does not remove breakpoints from node and they must be turned into an impure function again

UE - Gameplay - Blueprint - Aug 19, 2015

Changing a blueprint node to a pure function while a breakpoint is set on the node will maintain the breakpoint. Additionally, the breakpoint cannot be toggled or removed until the node is turned ba ...