Crash on checking event track key property after setting static mesh reference element

UE - Anim - Sequencer - Oct 19, 2017

Event track key with a structure containing staticmesh reference. Setting the staticmesh then reopening the property crashed the editor. ...

Undoing a change to the content of a Text widget while it is still selected causes an assert

UE - Editor - UI Systems - Jul 17, 2018

Hitting undo on a text widget while it is still selected will cause an assert. This appears to happen because the widget loses focus and attempts to commit it's text while still processing the undo, ...

Cascade Crashes Engine When Adding Particle LOD After Clearing LOD Settings

UE - Graphics Features - Feb 3, 2017

In cascade if you add particle LODs then remove, clear the LOD settings array, then attempt to add more LODs (after current) the editor will crash. This crash will only occur if you add LODs after c ...

Editor crash opening level with instance blueprint component

UE - Gameplay - Blueprint - Feb 20, 2017

When an actor has an instanced blueprint property, the order in which the map's imports are being verified when loading can cause the editor to crash. For example, trying to load an instanced bluep ...

Material Stats returning Incorrect Sampler and Instruction Counts

UE - Graphics Features - Mar 9, 2017

When creating and modifying a material, the base Texture Sampler count and instructions are returning incorrect values. In 4.14.3 whenever you create a new material the Texture Sampler count is 0/1 ...

Forced reboot launching editor the first time

UE - Foundation - Cpp Tools - May 30, 2018

Note that before I tried running the editor via the Launch button, I just happened to run the Editor exe directly, and this did not repro then. After my PC rebooted I tried to reproduce it again an ...

On static mesh import correctly named materials in project aren't automatically applied

UE - Editor - Content Pipeline - Import and Export - Jul 16, 2019

When importing a static mesh into a project with the appropriately named materials in it already they won't apply to the mesh automatically when setting Search Location to All Assets without being i ...

Report of branching point notifies failing to trigger

UE - Anim - Runtime - Nov 15, 2021

The problem seems to come from a notify having its LinkedMontage set to null when RefreshBranchingPointMarkers() is called. IsBranchingPoint() fails in this case, so it's never registered as a branc ...

Blueprint - Crash when a function takes an event as a parameter

UE - Gameplay - Blueprint - Oct 10, 2016

Looks like maybe we aren't replacing the source delegate function (SignatureFunction) reference on the UDelegateProperty after recompiling the class - the function's owner name has the TRASHCLASS pr ...

Crash retargeting animation with Virtual Bone

OLD - Anim - Oct 25, 2016

Crash occurs when attempting to retarget an animation whose skeleton has a virtual bone. ...