Editor crash when Landscape Comp. LODBias set to value greater than 0

UE - LD & Modeling - Terrain - Landscape - Mar 20, 2018

When LODBias for a landscape component is set to anything greater than zero, the editor will crash. Reproduced in 4.19.0 CL 3944462 and 4.20 Main. Not able to be reproduced in 4.18.3 CL 3832480. T ...

Adding Instances to a Hierarchical Instanced Static Mesh causes crash

UE - World Creation - Worldbuilding Tools - Foliage - Jul 29, 2018

Adding Instances to the Hierarchical Instanced Static Mesh Component on BeginPlay causes the Editor to crash. Tested in 4.19.2 (CL - 4033788), 4.20.1 (CL - 4229980), 4.21(CL - 4235929) ...

World Partition Converter- Soft object pointers to actors kept in scripted sublevels are incorrectly remapped to the main world during in place conversion

UE - World Creation - Worldbuilding Tools - World Partition - Jul 1, 2022

From user:"We have ran into an issue with soft object pointer fixup/remapping with the World Partition converter. If you have a sublevel that contains a level script and an actor that is hard refer ...

Using Volume Materials in a Material Billboard Causes Crash When Used with Volumetric Fog

UE - Graphics Features - Dec 3, 2018

Using volume material used in a material billboard Causes Crash When used with volumetric fog. Found in 4.19 CL# 4033788, 4.20 CL# 4369336, 4.21 CL# 4541578, 4.22 CL# 4618663 ...

Crash occurs when undoing the adding of a node connected to an in-use reroute node

UE - Gameplay - Blueprint Editor - Mar 20, 2018

REGRESSION Yes, this does not occur in 4.19.0 or in 4.18 Crash occurs when the user adds a node off a reroute node that's already in use, and then undoes that action. Found when testing around [Li ...

Editor crash when Use Dynamic Material Instance is set to "True" on landscape

UE - LD & Modeling - Terrain - Landscape - Mar 23, 2018

Setting "Use Dynamic Material Instance" to true in the landscape details will cause the editor to crash. Reproduced in 4.19.0 CL 3944462 and 4.20 Main. This feature is not available in 4.18.3. ...

Removing a parameter from a blueprint function in a library can cause actor classes calling it to lose their parent or instance data

UE - Gameplay - Blueprint - Oct 4, 2018

Compile errors caused by an actor calling a function with something hooked up to a removed parameter can cause that actor to lose it's place in the hierarchy. Typically, the actor will be fixed once ...

Exiting VR Edit mode from simulating causes viewport mismatch

UE - Editor - Workflow Systems - Mar 5, 2016

9/19 VREditor sync notes: Should grey out the editor button while you're simulating ----------------------------------------- I noticed you can fix this issue by reseting the viewport by pressing t ...

Unreal crashes when you connect scalar node to scalar input, when material function has a vertex interpolator

UE - Graphics Features - Mar 19, 2018

There is an issue occurring where Unreal crashes when you connect a scalar node to scalar input when the material function has a vertex interpolator. This issue causes the engine to crash, but the i ...

Editor crashes if Sequencer has keyframes for a variable that has changed

UE - Anim - Sequencer - Sep 19, 2018

The Editor crashes if loaded sequence has keyframes for an actor variable that has been changed, instead of soft erroring out. This was reported and tested on 4.20.3 (CL-4369336). It was reproduced ...