Blueprint enum-to-string node returning inconsistent results across platforms

UE - Gameplay - Mar 5, 2020

Converting a C++ enum to a string should be a consistent result, however when running in the editor it returns the display-name value instead of the index value. This prevents C++ UENUMs from being ...

A disabled Niagara component is respawned unexpectedly by scalability system in some edge cases

UE - Niagara - Scalability - Oct 17, 2023

Even after manually Deactivating a Niagara component, this Niagara component may be revived under certain conditions. This issue occurs when the following conditions are met before the Deactivated N ...

No visual updates when adjusting the curve editor in UMG for the first two points on the timeline

UE - Editor - UI Systems - Jul 6, 2015

When Switching the curve editor to cubic interpolations for example moving the blue handles will not change the curve. However, if a third point is add this function works as intended from the 2 poi ...

Editor crash when shader debugging enabled including r.shaders.optimize=0

UE - Rendering Architecture - Shaders - Jun 23, 2024

The editor crashes when activating cvar options for shader compilation and debugging. ...

Compiling Blueprints breaks socketed attachments of actors attached to non-root components

UE - Gameplay - Blueprint - Oct 12, 2023

When blueprints are compiled, instances of those blueprints have their attachments detached and then reattached. Reattachments always occur on the RootComponent regardless of which component they we ...

Lightmass Build Hanging at Specific Percentages

UE - Graphics Features - Sep 4, 2015

Lighting will build indefinitely in certain circumstances and can be verified in Swarm Agent that it will continue to process the maps even though the log shows it has completed. This is happening i ...

Lightmass Build Hanging at Specific Percentages

UE - Graphics Features - Sep 11, 2015

Lighting will build indefinitely in certain circumstances and can be verified in Swarm Agent that it will continue to process the maps even though the log shows it has completed. This is happening i ...

[StateTree] Linked Asset trees do not properly transition when On Tick transition is triggered on linked asset that transitions to Tree Succeeded

UE - AI - StateTree - Aug 26, 2024

Linked Asset trees do not transition correctly to Tree Succeeded if using an On Tick transition. The Debugger shows that the transition is triggered repeatedly but no state change occurs. Instead, t ...

GAS PlayMontageAndWait: Server applies root motion with wrong scale at last montage tick

UE - Gameplay - Gameplay Ability System - Apr 3, 2024

User reported: when playing an AnimMontage via GameplayAbility with the PlayMontageAndWait ability task that has a custom value for AnimRootMotionTranslationScale, (dedicated) servers can apply an i ...