Loading instanced static mesh causes memory leak in packaged game

UE - World Creation - Worldbuilding Tools - Foliage - Mar 3, 2021

The leaking variable is UInstancedStaticMeshComponent::InstanceDataBuffers. The memory block is passed to InitPerInstanceRenderData() via InstanceDataBuffers.Release(). But the function doesn't mana ...

REINST classes are available in the class reference drop down

UE - Gameplay - Blueprint Editor - Sep 28, 2021

This doesn't seem to occur every time I run the editor, I can't get it to repro consistently Note: It is possible that this is happening in blueprints based off of a native c++ class has been rel ...

WP level instance runtime settings affect streaming generation

UE - World Creation - Worldbuilding Tools - World Partition - Nov 16, 2023

If a level instance uses different runtime settings then it can override the main WP's runtime settings with UWorldPartitionRuntimeSpatialHash::ApplyCVars Runtime settings:GRuntimeSpatialHashUseA ...

Blueprint Typing Potentially Incorrect when using Chooser Plugin

UE - Anim - Gameplay - Jan 8, 2024

This appears to be some form of type confusion. In editor, the type of the result pin is a Packed Level Actor Class Reference, but at runtime, the returned value is a BlueprintGeneratedClass. ...

In-app purchase fail node does not execute properly without network connection

UE - Platform - Mobile - Sep 30, 2015

In-app purchase failure nodes do not execute when there isn't any connection. ...

Compile failure in UHT with combined multi-line / single line comments

UE - Foundation - Core - Apr 22, 2015

Using a single line comment to immediately follow a multi-line comment closing brace results in an illegible compile errors: "error code: CrashOrAssert(3)" Workaround: Include a space between */ an ...

Crash assigning spline mesh on tiled landscape

UE - LD & Modeling - Terrain - Landscape - Jun 1, 2015

Crash assigning mesh to spline on tiled landscape. ...

Editing the value of an Array Variable in an Actor Component's bp Details panel will collapse the expanded array

UE - Gameplay - Blueprint - Mar 27, 2015

Editing the value of an Array Variable in an Actor Component's bp Details panel will collapse the expanded array. Found in 4.7.3 but also reproducible in Main 2491982. Another user reporting the i ...

Blueprint Break on Exceptions does not work with Accessed None errors

UE - Gameplay - Blueprint - Jan 14, 2015

The experimental feature Blueprint Break on Exceptions does not work with Accessed None errors. To test, create an actor variable in a blueprint and use it as an input to a function without having s ...

Numpad keys don't respond to input commands on Linux

UE - Platform - Linux - Aug 31, 2015

Setting any of the numpad keys to an input command does not execute the command on Linux. ...